/*  Prototype JavaScript framework, version 1.6.0.1
 *  (c) 2005-2007 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.1',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : object.toString();
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object && object.constructor === Array;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    }.bind(this));
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  function $A(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  }
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name);
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON);
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON);
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, t, range;

    for (position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      t = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        t.insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      range = element.ownerDocument.createRange();
      t.initializeRange(element, range);
      t.insert(element, range.createContextualFragment(content.stripScripts()));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).getElementsBySelector("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return expression ? Selector.findElement(ancestors, expression, index) :
      ancestors[index || 0];
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    var descendants = element.descendants();
    return expression ? Selector.findElement(descendants, expression, index) :
      descendants[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return expression ? Selector.findElement(previousSiblings, expression, index) :
      previousSiblings[index || 0];
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return expression ? Selector.findElement(nextSiblings, expression, index) :
      nextSiblings[index || 0];
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor) return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p == 'relative' || p == 'absolute') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};


if (!document.createRange || Prototype.Browser.Opera) {
  Element.Methods.insert = function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = { bottom: insertions };

    var t = Element._insertionTranslations, content, position, pos, tagName;

    for (position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      pos      = t[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        pos.insert(element, content);
        continue;
      }

      content = Object.toHTML(content);
      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      if (t.tags[tagName]) {
        var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
        if (position == 'top' || position == 'after') fragments.reverse();
        fragments.each(pos.insert.curry(element));
      }
      else element.insertAdjacentHTML(pos.adjacency, content.stripScripts());

      content.evalScripts.bind(content).defer();
    }

    return element;
  };
}

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  $w('positionedOffset getOffsetParent viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position != 'static') return proceed(element);
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.clone(Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if (document.createElement('div').outerHTML) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  div.innerHTML = t[0] + html + t[1];
  t[2].times(function() { div = div.firstChild });
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: {
    adjacency: 'beforeBegin',
    insert: function(element, node) {
      element.parentNode.insertBefore(node, element);
    },
    initializeRange: function(element, range) {
      range.setStartBefore(element);
    }
  },
  top: {
    adjacency: 'afterBegin',
    insert: function(element, node) {
      element.insertBefore(node, element.firstChild);
    },
    initializeRange: function(element, range) {
      range.selectNodeContents(element);
      range.collapse(true);
    }
  },
  bottom: {
    adjacency: 'beforeEnd',
    insert: function(element, node) {
      element.appendChild(node);
    }
  },
  after: {
    adjacency: 'afterEnd',
    insert: function(element, node) {
      element.parentNode.insertBefore(node, element.nextSibling);
    },
    initializeRange: function(element, range) {
      range.setStartAfter(element);
    }
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  this.bottom.initializeRange = this.top.initializeRange;
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);   c = false;',
    className:    'n = h.className(n, r, "#{1}", c); c = false;',
    id:           'n = h.id(n, r, "#{1}", c);        c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}"); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:       /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s)|(?=:))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return Selector.operators[matches[2]](nodeValue, matches[3]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._counted = true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._counted = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._counted = true;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._counted) {
          n._counted = true;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      tagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() == tagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._counted) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._counted) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  matchElements: function(elements, expression) {
    var matches = new Selector(expression).findElements(), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._counted) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    var exprs = expressions.join(',');
    expressions = [];
    exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  // IE returns comment nodes on getElementsByTagName("*").
  // Filter them out.
  Selector.handlers.concat = function(a, b) {
    for (var i = 0, node; node = b[i]; i++)
      if (node.tagName !== "!") a.push(node);
    return a;
  };
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._eventID) return element._eventID;
    arguments.callee.id = arguments.callee.id || 1;
    return element._eventID = ++arguments.callee.id;
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event)
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      if (document.createEvent) {
        var event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        var event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize()
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer, fired = false;

  function fireContentLoadedEvent() {
    if (fired) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    fired = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();
/*
*
* Copyright (c) 2007 Andrew Tetlaw
* 
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* * 
*
*
* FastInit
* http://tetlaw.id.au/view/javascript/fastinit
* Andrew Tetlaw
* Version 1.3 (2007-01-09)
* Based on:
* http://dean.edwards.name/weblog/2006/03/faster
* http://dean.edwards.name/weblog/2006/06/again/
* Help from:
* http://www.cherny.com/webdev/26/domloaded-object-literal-updated
* 
*/
var FastInit = {
	done : false,
	onload : function() {
		if (FastInit.done) return;
		FastInit.done = true;
		FastInit.actions.each(function(func) {
		  try {
  			func();		    
		  } catch(e) {
		    log_exception(e);
		  }
		})
	},
	actions : $A([]),
	addOnLoad : function() {
		for(var x = 0; x < arguments.length; x++) {
			var func = arguments[x];
			if(!func || typeof func != 'function') continue;
			FastInit.actions.push(func);
		}
	},
	listen : function() {
		if (/WebKit|khtml/i.test(navigator.userAgent)) {
			FastInit._timer = setInterval(function() {
				if (/loaded|complete/.test(document.readyState)) {
					clearInterval(FastInit._timer);
					delete FastInit._timer;
					FastInit.onload();
				}
			}, 10);
		} else if (document.addEventListener) {
			document.addEventListener('DOMContentLoaded', FastInit.onload, false);
		} else if(!FastInit._iew32) {
			Event.observe(window, 'load', FastInit.onload);
		}
	},
	_timer : null,
	_iew32 : false
}
/*@cc_on @*/
/*@if (@_win32)
FastInit._iew32 = true;
document.write('<script id="__ie_onload" defer src="' + ((location.protocol == 'https:') ? '//0' : 'javascript:void(0)') + '"><\/script>');
$('__ie_onload').onreadystatechange = function(){if (this.readyState == 'complete') FastInit.onload();};
/*@end @*/
FastInit.listen();

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/ 

// converts rgb() and #xxx to #xxxxxx format,  
// returns self (or first argument) if not convertable  
String.prototype.parseColor = function() {  
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {  
    var cols = this.slice(4,this.length-1).split(',');  
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
  } else {  
    if (this.slice(0,1) == '#') {  
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
      if (this.length==7) color = this.toLowerCase();  
    }  
  }  
  return (color.length==7 ? color : (arguments[0] || this));  
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);  
  element.setStyle({fontSize: (percent/100) + 'em'});   
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + 0.5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
    },
    pulse: function(pos, pulses) { 
      pulses = pulses || 5; 
      return (
        ((pos % (1/pulses)) * pulses).round() == 0 ? 
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
    },
    spring: function(pos) { 
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
    
    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character), 
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') || 
        Object.isFunction(element)) && 
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;
      
    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ? 
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;    
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();
    
    var position = Object.isString(effect.options.queue) ? 
      effect.options.queue : effect.options.queue.position;
    
    switch(position) {
      case 'front':
        // move unstarted effects after this effect  
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }
    
    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);
    
    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++) 
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;
    
    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;
    
    eval('this.render = function(pos){ '+
      'if (this.state=="idle"){this.state="running";'+
      codeForEvent(this.options,'beforeSetup')+
      (this.setup ? 'this.setup();':'')+ 
      codeForEvent(this.options,'afterSetup')+
      '};if (this.state=="running"){'+
      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
      'this.position=pos;'+
      codeForEvent(this.options,'beforeUpdate')+
      (this.update ? 'this.update(pos);':'')+
      codeForEvent(this.options,'afterUpdate')+
      '}}');
    
    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish(); 
        this.event('afterFinish');
        return;  
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(), 
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) : 
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element, 
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');
    
    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));
      
    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;
    
    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));
    
    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
    
    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
    scrollOffsets = document.viewport.getScrollOffsets(),
    elementOffsets = $(element).cumulativeOffset(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()) }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) { 
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity}); 
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show(); 
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = { 
    opacity: element.getInlineOpacity(), 
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200, 
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
     Object.extend({ duration: 1.0, 
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element)
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false, 
      scaleX: false, 
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      } 
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, { 
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) { 
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      })
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}) }}) }}) }}) }}) }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false, 
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false, 
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },  
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, { 
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping(); 
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();    
  var initialMoveX, initialMoveY;
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0; 
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }
  
  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01, 
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show(); 
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
             }
           }, options)
      )
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':  
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }
  
  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({            
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping(); 
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { };
  var oldOpacity = element.getInlineOpacity();
  var transition = options.transition || Effect.Transitions.sinoidal;
  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
  reverser.bind(transition);
  return new Effect.Opacity(element, 
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({   
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, { 
      scaleContent: false, 
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });
    
    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        }
      }
    }
    this.start(options);
  },
  
  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return { 
        style: property.camelize(), 
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      )
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] = 
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');
  
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }
  
  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]); 
  });
  
  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(hash, property) {
      hash.set(property, css[property]);
      return hash;
    });
    if (!styles.opacity) styles.set('opacity', element.getOpacity());
    return styles;
  };
};

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element)
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) { 
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    }
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);


function time_ago_in_words(from) {
  return distance_of_time_in_words(new Date(), new Date(from)) 
}

function distance_of_time_in_words(to, from) {
  seconds_ago = ((to  - from) / 1000);
  minutes_ago = Math.floor(seconds_ago / 60)

  if(minutes_ago <= 0) { return "less than a minute";}
  if(minutes_ago == 1) { return "a minute";}
  if(minutes_ago < 45) { return minutes_ago + " minutes";}
  if(minutes_ago < 90) { return "1 hour";}
  hours_ago  = Math.round(minutes_ago / 60);
  if(minutes_ago < 1440) { return hours_ago + " hours";}
  if(minutes_ago < 2880) { return "1 day";}
  days_ago  = Math.round(minutes_ago / 1440);
  if(minutes_ago < 43200) { return days_ago + " days";}
  if(minutes_ago < 86400) { return "1 month";}
  months_ago  = Math.round(minutes_ago / 43200);
  if(minutes_ago < 525960) { return months_ago + " months";}
  if(minutes_ago < 1051920) { return "1 year";}
  years_ago  = Math.round(minutes_ago / 525960);
  return "over " + years_ago + " years" 
}
/*
Copyright (c) 2008, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.5.2
*/
if(typeof YAHOO=="undefined"||!YAHOO){var YAHOO={};}YAHOO.namespace=function(){var A=arguments,E=null,C,B,D;for(C=0;C<A.length;C=C+1){D=A[C].split(".");E=YAHOO;for(B=(D[0]=="YAHOO")?1:0;B<D.length;B=B+1){E[D[B]]=E[D[B]]||{};E=E[D[B]];}}return E;};YAHOO.log=function(D,A,C){var B=YAHOO.widget.Logger;if(B&&B.log){return B.log(D,A,C);}else{return false;}};YAHOO.register=function(A,E,D){var I=YAHOO.env.modules;if(!I[A]){I[A]={versions:[],builds:[]};}var B=I[A],H=D.version,G=D.build,F=YAHOO.env.listeners;B.name=A;B.version=H;B.build=G;B.versions.push(H);B.builds.push(G);B.mainClass=E;for(var C=0;C<F.length;C=C+1){F[C](B);}if(E){E.VERSION=H;E.BUILD=G;}else{YAHOO.log("mainClass is undefined for module "+A,"warn");}};YAHOO.env=YAHOO.env||{modules:[],listeners:[]};YAHOO.env.getVersion=function(A){return YAHOO.env.modules[A]||null;};YAHOO.env.ua=function(){var C={ie:0,opera:0,gecko:0,webkit:0,mobile:null,air:0};var B=navigator.userAgent,A;if((/KHTML/).test(B)){C.webkit=1;}A=B.match(/AppleWebKit\/([^\s]*)/);if(A&&A[1]){C.webkit=parseFloat(A[1]);if(/ Mobile\//.test(B)){C.mobile="Apple";}else{A=B.match(/NokiaN[^\/]*/);if(A){C.mobile=A[0];}}A=B.match(/AdobeAIR\/([^\s]*)/);if(A){C.air=A[0];}}if(!C.webkit){A=B.match(/Opera[\s\/]([^\s]*)/);if(A&&A[1]){C.opera=parseFloat(A[1]);A=B.match(/Opera Mini[^;]*/);if(A){C.mobile=A[0];}}else{A=B.match(/MSIE\s([^;]*)/);if(A&&A[1]){C.ie=parseFloat(A[1]);}else{A=B.match(/Gecko\/([^\s]*)/);if(A){C.gecko=1;A=B.match(/rv:([^\s\)]*)/);if(A&&A[1]){C.gecko=parseFloat(A[1]);}}}}}return C;}();(function(){YAHOO.namespace("util","widget","example");if("undefined"!==typeof YAHOO_config){var B=YAHOO_config.listener,A=YAHOO.env.listeners,D=true,C;if(B){for(C=0;C<A.length;C=C+1){if(A[C]==B){D=false;break;}}if(D){A.push(B);}}}})();YAHOO.lang=YAHOO.lang||{};(function(){var A=YAHOO.lang,C=["toString","valueOf"],B={isArray:function(D){if(D){return A.isNumber(D.length)&&A.isFunction(D.splice);}return false;},isBoolean:function(D){return typeof D==="boolean";},isFunction:function(D){return typeof D==="function";},isNull:function(D){return D===null;},isNumber:function(D){return typeof D==="number"&&isFinite(D);},isObject:function(D){return(D&&(typeof D==="object"||A.isFunction(D)))||false;},isString:function(D){return typeof D==="string";},isUndefined:function(D){return typeof D==="undefined";},_IEEnumFix:(YAHOO.env.ua.ie)?function(F,E){for(var D=0;D<C.length;D=D+1){var H=C[D],G=E[H];if(A.isFunction(G)&&G!=Object.prototype[H]){F[H]=G;}}}:function(){},extend:function(H,I,G){if(!I||!H){throw new Error("extend failed, please check that "+"all dependencies are included.");}var E=function(){};E.prototype=I.prototype;H.prototype=new E();H.prototype.constructor=H;H.superclass=I.prototype;if(I.prototype.constructor==Object.prototype.constructor){I.prototype.constructor=I;}if(G){for(var D in G){if(A.hasOwnProperty(G,D)){H.prototype[D]=G[D];}}A._IEEnumFix(H.prototype,G);}},augmentObject:function(H,G){if(!G||!H){throw new Error("Absorb failed, verify dependencies.");}var D=arguments,F,I,E=D[2];if(E&&E!==true){for(F=2;F<D.length;F=F+1){H[D[F]]=G[D[F]];}}else{for(I in G){if(E||!(I in H)){H[I]=G[I];}}A._IEEnumFix(H,G);}},augmentProto:function(G,F){if(!F||!G){throw new Error("Augment failed, verify dependencies.");}var D=[G.prototype,F.prototype];for(var E=2;E<arguments.length;E=E+1){D.push(arguments[E]);}A.augmentObject.apply(this,D);},dump:function(D,I){var F,H,K=[],L="{...}",E="f(){...}",J=", ",G=" => ";if(!A.isObject(D)){return D+"";}else{if(D instanceof Date||("nodeType" in D&&"tagName" in D)){return D;}else{if(A.isFunction(D)){return E;}}}I=(A.isNumber(I))?I:3;if(A.isArray(D)){K.push("[");for(F=0,H=D.length;F<H;F=F+1){if(A.isObject(D[F])){K.push((I>0)?A.dump(D[F],I-1):L);}else{K.push(D[F]);}K.push(J);}if(K.length>1){K.pop();}K.push("]");}else{K.push("{");for(F in D){if(A.hasOwnProperty(D,F)){K.push(F+G);if(A.isObject(D[F])){K.push((I>0)?A.dump(D[F],I-1):L);}else{K.push(D[F]);}K.push(J);}}if(K.length>1){K.pop();}K.push("}");}return K.join("");},substitute:function(S,E,L){var I,H,G,O,P,R,N=[],F,J="dump",M=" ",D="{",Q="}";for(;;){I=S.lastIndexOf(D);if(I<0){break;}H=S.indexOf(Q,I);if(I+1>=H){break;}F=S.substring(I+1,H);O=F;R=null;G=O.indexOf(M);if(G>-1){R=O.substring(G+1);O=O.substring(0,G);}P=E[O];if(L){P=L(O,P,R);}if(A.isObject(P)){if(A.isArray(P)){P=A.dump(P,parseInt(R,10));}else{R=R||"";var K=R.indexOf(J);if(K>-1){R=R.substring(4);}if(P.toString===Object.prototype.toString||K>-1){P=A.dump(P,parseInt(R,10));}else{P=P.toString();}}}else{if(!A.isString(P)&&!A.isNumber(P)){P="~-"+N.length+"-~";N[N.length]=F;}}S=S.substring(0,I)+P+S.substring(H+1);}for(I=N.length-1;I>=0;I=I-1){S=S.replace(new RegExp("~-"+I+"-~"),"{"+N[I]+"}","g");}return S;},trim:function(D){try{return D.replace(/^\s+|\s+$/g,"");}catch(E){return D;}},merge:function(){var G={},E=arguments;for(var F=0,D=E.length;F<D;F=F+1){A.augmentObject(G,E[F],true);}return G;},later:function(K,E,L,G,H){K=K||0;E=E||{};var F=L,J=G,I,D;if(A.isString(L)){F=E[L];}if(!F){throw new TypeError("method undefined");}if(!A.isArray(J)){J=[G];}I=function(){F.apply(E,J);};D=(H)?setInterval(I,K):setTimeout(I,K);return{interval:H,cancel:function(){if(this.interval){clearInterval(D);}else{clearTimeout(D);}}};},isValue:function(D){return(A.isObject(D)||A.isString(D)||A.isNumber(D)||A.isBoolean(D));}};A.hasOwnProperty=(Object.prototype.hasOwnProperty)?function(D,E){return D&&D.hasOwnProperty(E);}:function(D,E){return !A.isUndefined(D[E])&&D.constructor.prototype[E]!==D[E];};B.augmentObject(A,B,true);YAHOO.util.Lang=A;A.augment=A.augmentProto;YAHOO.augment=A.augmentProto;YAHOO.extend=A.extend;})();YAHOO.register("yahoo",YAHOO,{version:"2.5.2",build:"1076"});
/*
Copyright (c) 2008, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.5.2
*/
YAHOO.util.CustomEvent=function(D,B,C,A){this.type=D;this.scope=B||window;this.silent=C;this.signature=A||YAHOO.util.CustomEvent.LIST;this.subscribers=[];if(!this.silent){}var E="_YUICEOnSubscribe";if(D!==E){this.subscribeEvent=new YAHOO.util.CustomEvent(E,this,true);}this.lastError=null;};YAHOO.util.CustomEvent.LIST=0;YAHOO.util.CustomEvent.FLAT=1;YAHOO.util.CustomEvent.prototype={subscribe:function(B,C,A){if(!B){throw new Error("Invalid callback for subscriber to '"+this.type+"'");}if(this.subscribeEvent){this.subscribeEvent.fire(B,C,A);}this.subscribers.push(new YAHOO.util.Subscriber(B,C,A));},unsubscribe:function(D,F){if(!D){return this.unsubscribeAll();}var E=false;for(var B=0,A=this.subscribers.length;B<A;++B){var C=this.subscribers[B];if(C&&C.contains(D,F)){this._delete(B);E=true;}}return E;},fire:function(){this.lastError=null;var K=[],E=this.subscribers.length;if(!E&&this.silent){return true;}var I=[].slice.call(arguments,0),G=true,D,J=false;if(!this.silent){}var C=this.subscribers.slice(),A=YAHOO.util.Event.throwErrors;for(D=0;D<E;++D){var M=C[D];if(!M){J=true;}else{if(!this.silent){}var L=M.getScope(this.scope);if(this.signature==YAHOO.util.CustomEvent.FLAT){var B=null;if(I.length>0){B=I[0];}try{G=M.fn.call(L,B,M.obj);}catch(F){this.lastError=F;if(A){throw F;}}}else{try{G=M.fn.call(L,this.type,I,M.obj);}catch(H){this.lastError=H;if(A){throw H;}}}if(false===G){if(!this.silent){}break;}}}return(G!==false);},unsubscribeAll:function(){for(var A=this.subscribers.length-1;A>-1;A--){this._delete(A);}this.subscribers=[];return A;},_delete:function(A){var B=this.subscribers[A];if(B){delete B.fn;delete B.obj;}this.subscribers.splice(A,1);},toString:function(){return"CustomEvent: "+"'"+this.type+"', "+"scope: "+this.scope;}};YAHOO.util.Subscriber=function(B,C,A){this.fn=B;this.obj=YAHOO.lang.isUndefined(C)?null:C;this.override=A;};YAHOO.util.Subscriber.prototype.getScope=function(A){if(this.override){if(this.override===true){return this.obj;}else{return this.override;}}return A;};YAHOO.util.Subscriber.prototype.contains=function(A,B){if(B){return(this.fn==A&&this.obj==B);}else{return(this.fn==A);}};YAHOO.util.Subscriber.prototype.toString=function(){return"Subscriber { obj: "+this.obj+", override: "+(this.override||"no")+" }";};if(!YAHOO.util.Event){YAHOO.util.Event=function(){var H=false;var I=[];var J=[];var G=[];var E=[];var C=0;var F=[];var B=[];var A=0;var D={63232:38,63233:40,63234:37,63235:39,63276:33,63277:34,25:9};return{POLL_RETRYS:2000,POLL_INTERVAL:20,EL:0,TYPE:1,FN:2,WFN:3,UNLOAD_OBJ:3,ADJ_SCOPE:4,OBJ:5,OVERRIDE:6,lastError:null,isSafari:YAHOO.env.ua.webkit,webkit:YAHOO.env.ua.webkit,isIE:YAHOO.env.ua.ie,_interval:null,_dri:null,DOMReady:false,throwErrors:false,startInterval:function(){if(!this._interval){var K=this;var L=function(){K._tryPreloadAttach();};this._interval=setInterval(L,this.POLL_INTERVAL);}},onAvailable:function(P,M,Q,O,N){var K=(YAHOO.lang.isString(P))?[P]:P;for(var L=0;L<K.length;L=L+1){F.push({id:K[L],fn:M,obj:Q,override:O,checkReady:N});}C=this.POLL_RETRYS;this.startInterval();},onContentReady:function(M,K,N,L){this.onAvailable(M,K,N,L,true);},onDOMReady:function(K,M,L){if(this.DOMReady){setTimeout(function(){var N=window;if(L){if(L===true){N=M;}else{N=L;}}K.call(N,"DOMReady",[],M);},0);}else{this.DOMReadyEvent.subscribe(K,M,L);}},addListener:function(M,K,V,Q,L){if(!V||!V.call){return false;}if(this._isValidCollection(M)){var W=true;for(var R=0,T=M.length;R<T;++R){W=this.on(M[R],K,V,Q,L)&&W;}return W;}else{if(YAHOO.lang.isString(M)){var P=this.getEl(M);if(P){M=P;}else{this.onAvailable(M,function(){YAHOO.util.Event.on(M,K,V,Q,L);});return true;}}}if(!M){return false;}if("unload"==K&&Q!==this){J[J.length]=[M,K,V,Q,L];return true;}var Y=M;if(L){if(L===true){Y=Q;}else{Y=L;}}var N=function(Z){return V.call(Y,YAHOO.util.Event.getEvent(Z,M),Q);};var X=[M,K,V,N,Y,Q,L];var S=I.length;I[S]=X;if(this.useLegacyEvent(M,K)){var O=this.getLegacyIndex(M,K);if(O==-1||M!=G[O][0]){O=G.length;B[M.id+K]=O;G[O]=[M,K,M["on"+K]];E[O]=[];M["on"+K]=function(Z){YAHOO.util.Event.fireLegacyEvent(YAHOO.util.Event.getEvent(Z),O);};}E[O].push(X);}else{try{this._simpleAdd(M,K,N,false);}catch(U){this.lastError=U;this.removeListener(M,K,V);return false;}}return true;},fireLegacyEvent:function(O,M){var Q=true,K,S,R,T,P;S=E[M].slice();for(var L=0,N=S.length;L<N;++L){R=S[L];if(R&&R[this.WFN]){T=R[this.ADJ_SCOPE];P=R[this.WFN].call(T,O);Q=(Q&&P);}}K=G[M];if(K&&K[2]){K[2](O);}return Q;},getLegacyIndex:function(L,M){var K=this.generateId(L)+M;if(typeof B[K]=="undefined"){return -1;}else{return B[K];}},useLegacyEvent:function(L,M){if(this.webkit&&("click"==M||"dblclick"==M)){var K=parseInt(this.webkit,10);if(!isNaN(K)&&K<418){return true;}}return false;},removeListener:function(L,K,T){var O,R,V;if(typeof L=="string"){L=this.getEl(L);}else{if(this._isValidCollection(L)){var U=true;for(O=L.length-1;O>-1;O--){U=(this.removeListener(L[O],K,T)&&U);}return U;}}if(!T||!T.call){return this.purgeElement(L,false,K);}if("unload"==K){for(O=J.length-1;O>-1;O--){V=J[O];if(V&&V[0]==L&&V[1]==K&&V[2]==T){J.splice(O,1);return true;}}return false;}var P=null;var Q=arguments[3];if("undefined"===typeof Q){Q=this._getCacheIndex(L,K,T);}if(Q>=0){P=I[Q];}if(!L||!P){return false;}if(this.useLegacyEvent(L,K)){var N=this.getLegacyIndex(L,K);var M=E[N];if(M){for(O=0,R=M.length;O<R;++O){V=M[O];if(V&&V[this.EL]==L&&V[this.TYPE]==K&&V[this.FN]==T){M.splice(O,1);break;}}}}else{try{this._simpleRemove(L,K,P[this.WFN],false);}catch(S){this.lastError=S;return false;}}delete I[Q][this.WFN];delete I[Q][this.FN];I.splice(Q,1);return true;},getTarget:function(M,L){var K=M.target||M.srcElement;return this.resolveTextNode(K);},resolveTextNode:function(L){try{if(L&&3==L.nodeType){return L.parentNode;}}catch(K){}return L;},getPageX:function(L){var K=L.pageX;if(!K&&0!==K){K=L.clientX||0;if(this.isIE){K+=this._getScrollLeft();}}return K;},getPageY:function(K){var L=K.pageY;if(!L&&0!==L){L=K.clientY||0;if(this.isIE){L+=this._getScrollTop();}}return L;
},getXY:function(K){return[this.getPageX(K),this.getPageY(K)];},getRelatedTarget:function(L){var K=L.relatedTarget;if(!K){if(L.type=="mouseout"){K=L.toElement;}else{if(L.type=="mouseover"){K=L.fromElement;}}}return this.resolveTextNode(K);},getTime:function(M){if(!M.time){var L=new Date().getTime();try{M.time=L;}catch(K){this.lastError=K;return L;}}return M.time;},stopEvent:function(K){this.stopPropagation(K);this.preventDefault(K);},stopPropagation:function(K){if(K.stopPropagation){K.stopPropagation();}else{K.cancelBubble=true;}},preventDefault:function(K){if(K.preventDefault){K.preventDefault();}else{K.returnValue=false;}},getEvent:function(M,K){var L=M||window.event;if(!L){var N=this.getEvent.caller;while(N){L=N.arguments[0];if(L&&Event==L.constructor){break;}N=N.caller;}}return L;},getCharCode:function(L){var K=L.keyCode||L.charCode||0;if(YAHOO.env.ua.webkit&&(K in D)){K=D[K];}return K;},_getCacheIndex:function(O,P,N){for(var M=0,L=I.length;M<L;M=M+1){var K=I[M];if(K&&K[this.FN]==N&&K[this.EL]==O&&K[this.TYPE]==P){return M;}}return -1;},generateId:function(K){var L=K.id;if(!L){L="yuievtautoid-"+A;++A;K.id=L;}return L;},_isValidCollection:function(L){try{return(L&&typeof L!=="string"&&L.length&&!L.tagName&&!L.alert&&typeof L[0]!=="undefined");}catch(K){return false;}},elCache:{},getEl:function(K){return(typeof K==="string")?document.getElementById(K):K;},clearCache:function(){},DOMReadyEvent:new YAHOO.util.CustomEvent("DOMReady",this),_load:function(L){if(!H){H=true;var K=YAHOO.util.Event;K._ready();K._tryPreloadAttach();}},_ready:function(L){var K=YAHOO.util.Event;if(!K.DOMReady){K.DOMReady=true;K.DOMReadyEvent.fire();K._simpleRemove(document,"DOMContentLoaded",K._ready);}},_tryPreloadAttach:function(){if(F.length===0){C=0;clearInterval(this._interval);this._interval=null;return ;}if(this.locked){return ;}if(this.isIE){if(!this.DOMReady){this.startInterval();return ;}}this.locked=true;var Q=!H;if(!Q){Q=(C>0&&F.length>0);}var P=[];var R=function(T,U){var S=T;if(U.override){if(U.override===true){S=U.obj;}else{S=U.override;}}U.fn.call(S,U.obj);};var L,K,O,N,M=[];for(L=0,K=F.length;L<K;L=L+1){O=F[L];if(O){N=this.getEl(O.id);if(N){if(O.checkReady){if(H||N.nextSibling||!Q){M.push(O);F[L]=null;}}else{R(N,O);F[L]=null;}}else{P.push(O);}}}for(L=0,K=M.length;L<K;L=L+1){O=M[L];R(this.getEl(O.id),O);}C--;if(Q){for(L=F.length-1;L>-1;L--){O=F[L];if(!O||!O.id){F.splice(L,1);}}this.startInterval();}else{clearInterval(this._interval);this._interval=null;}this.locked=false;},purgeElement:function(O,P,R){var M=(YAHOO.lang.isString(O))?this.getEl(O):O;var Q=this.getListeners(M,R),N,K;if(Q){for(N=Q.length-1;N>-1;N--){var L=Q[N];this.removeListener(M,L.type,L.fn);}}if(P&&M&&M.childNodes){for(N=0,K=M.childNodes.length;N<K;++N){this.purgeElement(M.childNodes[N],P,R);}}},getListeners:function(M,K){var P=[],L;if(!K){L=[I,J];}else{if(K==="unload"){L=[J];}else{L=[I];}}var R=(YAHOO.lang.isString(M))?this.getEl(M):M;for(var O=0;O<L.length;O=O+1){var T=L[O];if(T){for(var Q=0,S=T.length;Q<S;++Q){var N=T[Q];if(N&&N[this.EL]===R&&(!K||K===N[this.TYPE])){P.push({type:N[this.TYPE],fn:N[this.FN],obj:N[this.OBJ],adjust:N[this.OVERRIDE],scope:N[this.ADJ_SCOPE],index:Q});}}}}return(P.length)?P:null;},_unload:function(Q){var K=YAHOO.util.Event,N,M,L,P,O,R=J.slice();for(N=0,P=J.length;N<P;++N){L=R[N];if(L){var S=window;if(L[K.ADJ_SCOPE]){if(L[K.ADJ_SCOPE]===true){S=L[K.UNLOAD_OBJ];}else{S=L[K.ADJ_SCOPE];}}L[K.FN].call(S,K.getEvent(Q,L[K.EL]),L[K.UNLOAD_OBJ]);R[N]=null;L=null;S=null;}}J=null;if(I){for(M=I.length-1;M>-1;M--){L=I[M];if(L){K.removeListener(L[K.EL],L[K.TYPE],L[K.FN],M);}}L=null;}G=null;K._simpleRemove(window,"unload",K._unload);},_getScrollLeft:function(){return this._getScroll()[1];},_getScrollTop:function(){return this._getScroll()[0];},_getScroll:function(){var K=document.documentElement,L=document.body;if(K&&(K.scrollTop||K.scrollLeft)){return[K.scrollTop,K.scrollLeft];}else{if(L){return[L.scrollTop,L.scrollLeft];}else{return[0,0];}}},regCE:function(){},_simpleAdd:function(){if(window.addEventListener){return function(M,N,L,K){M.addEventListener(N,L,(K));};}else{if(window.attachEvent){return function(M,N,L,K){M.attachEvent("on"+N,L);};}else{return function(){};}}}(),_simpleRemove:function(){if(window.removeEventListener){return function(M,N,L,K){M.removeEventListener(N,L,(K));};}else{if(window.detachEvent){return function(L,M,K){L.detachEvent("on"+M,K);};}else{return function(){};}}}()};}();(function(){var EU=YAHOO.util.Event;EU.on=EU.addListener;
/* DOMReady: based on work by: Dean Edwards/John Resig/Matthias Miller */
if(EU.isIE){YAHOO.util.Event.onDOMReady(YAHOO.util.Event._tryPreloadAttach,YAHOO.util.Event,true);var n=document.createElement("p");EU._dri=setInterval(function(){try{n.doScroll("left");clearInterval(EU._dri);EU._dri=null;EU._ready();n=null;}catch(ex){}},EU.POLL_INTERVAL);}else{if(EU.webkit&&EU.webkit<525){EU._dri=setInterval(function(){var rs=document.readyState;if("loaded"==rs||"complete"==rs){clearInterval(EU._dri);EU._dri=null;EU._ready();}},EU.POLL_INTERVAL);}else{EU._simpleAdd(document,"DOMContentLoaded",EU._ready);}}EU._simpleAdd(window,"load",EU._load);EU._simpleAdd(window,"unload",EU._unload);EU._tryPreloadAttach();})();}YAHOO.util.EventProvider=function(){};YAHOO.util.EventProvider.prototype={__yui_events:null,__yui_subscribers:null,subscribe:function(A,C,F,E){this.__yui_events=this.__yui_events||{};var D=this.__yui_events[A];if(D){D.subscribe(C,F,E);}else{this.__yui_subscribers=this.__yui_subscribers||{};var B=this.__yui_subscribers;if(!B[A]){B[A]=[];}B[A].push({fn:C,obj:F,override:E});}},unsubscribe:function(C,E,G){this.__yui_events=this.__yui_events||{};var A=this.__yui_events;if(C){var F=A[C];if(F){return F.unsubscribe(E,G);}}else{var B=true;for(var D in A){if(YAHOO.lang.hasOwnProperty(A,D)){B=B&&A[D].unsubscribe(E,G);}}return B;}return false;},unsubscribeAll:function(A){return this.unsubscribe(A);},createEvent:function(G,D){this.__yui_events=this.__yui_events||{};var A=D||{};var I=this.__yui_events;
if(I[G]){}else{var H=A.scope||this;var E=(A.silent);var B=new YAHOO.util.CustomEvent(G,H,E,YAHOO.util.CustomEvent.FLAT);I[G]=B;if(A.onSubscribeCallback){B.subscribeEvent.subscribe(A.onSubscribeCallback);}this.__yui_subscribers=this.__yui_subscribers||{};var F=this.__yui_subscribers[G];if(F){for(var C=0;C<F.length;++C){B.subscribe(F[C].fn,F[C].obj,F[C].override);}}}return I[G];},fireEvent:function(E,D,A,C){this.__yui_events=this.__yui_events||{};var G=this.__yui_events[E];if(!G){return null;}var B=[];for(var F=1;F<arguments.length;++F){B.push(arguments[F]);}return G.fire.apply(G,B);},hasEvent:function(A){if(this.__yui_events){if(this.__yui_events[A]){return true;}}return false;}};YAHOO.util.KeyListener=function(A,F,B,C){if(!A){}else{if(!F){}else{if(!B){}}}if(!C){C=YAHOO.util.KeyListener.KEYDOWN;}var D=new YAHOO.util.CustomEvent("keyPressed");this.enabledEvent=new YAHOO.util.CustomEvent("enabled");this.disabledEvent=new YAHOO.util.CustomEvent("disabled");if(typeof A=="string"){A=document.getElementById(A);}if(typeof B=="function"){D.subscribe(B);}else{D.subscribe(B.fn,B.scope,B.correctScope);}function E(J,I){if(!F.shift){F.shift=false;}if(!F.alt){F.alt=false;}if(!F.ctrl){F.ctrl=false;}if(J.shiftKey==F.shift&&J.altKey==F.alt&&J.ctrlKey==F.ctrl){var G;if(F.keys instanceof Array){for(var H=0;H<F.keys.length;H++){G=F.keys[H];if(G==J.charCode){D.fire(J.charCode,J);break;}else{if(G==J.keyCode){D.fire(J.keyCode,J);break;}}}}else{G=F.keys;if(G==J.charCode){D.fire(J.charCode,J);}else{if(G==J.keyCode){D.fire(J.keyCode,J);}}}}}this.enable=function(){if(!this.enabled){YAHOO.util.Event.addListener(A,C,E);this.enabledEvent.fire(F);}this.enabled=true;};this.disable=function(){if(this.enabled){YAHOO.util.Event.removeListener(A,C,E);this.disabledEvent.fire(F);}this.enabled=false;};this.toString=function(){return"KeyListener ["+F.keys+"] "+A.tagName+(A.id?"["+A.id+"]":"");};};YAHOO.util.KeyListener.KEYDOWN="keydown";YAHOO.util.KeyListener.KEYUP="keyup";YAHOO.util.KeyListener.KEY={ALT:18,BACK_SPACE:8,CAPS_LOCK:20,CONTROL:17,DELETE:46,DOWN:40,END:35,ENTER:13,ESCAPE:27,HOME:36,LEFT:37,META:224,NUM_LOCK:144,PAGE_DOWN:34,PAGE_UP:33,PAUSE:19,PRINTSCREEN:44,RIGHT:39,SCROLL_LOCK:145,SHIFT:16,SPACE:32,TAB:9,UP:38};YAHOO.register("event",YAHOO.util.Event,{version:"2.5.2",build:"1076"});
/*
Copyright (c) 2009, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.7.0
*/
YAHOO.util.Connect={_msxml_progid:["Microsoft.XMLHTTP","MSXML2.XMLHTTP.3.0","MSXML2.XMLHTTP"],_http_headers:{},_has_http_headers:false,_use_default_post_header:true,_default_post_header:"application/x-www-form-urlencoded; charset=UTF-8",_default_form_header:"application/x-www-form-urlencoded",_use_default_xhr_header:true,_default_xhr_header:"XMLHttpRequest",_has_default_headers:true,_default_headers:{},_isFormSubmit:false,_isFileUpload:false,_formNode:null,_sFormData:null,_poll:{},_timeOut:{},_polling_interval:50,_transaction_id:0,_submitElementValue:null,_hasSubmitListener:(function(){if(YAHOO.util.Event){YAHOO.util.Event.addListener(document,"click",function(C){var B=YAHOO.util.Event.getTarget(C),A=B.nodeName.toLowerCase();if((A==="input"||A==="button")&&(B.type&&B.type.toLowerCase()=="submit")){YAHOO.util.Connect._submitElementValue=encodeURIComponent(B.name)+"="+encodeURIComponent(B.value);}});return true;}return false;})(),startEvent:new YAHOO.util.CustomEvent("start"),completeEvent:new YAHOO.util.CustomEvent("complete"),successEvent:new YAHOO.util.CustomEvent("success"),failureEvent:new YAHOO.util.CustomEvent("failure"),uploadEvent:new YAHOO.util.CustomEvent("upload"),abortEvent:new YAHOO.util.CustomEvent("abort"),_customEvents:{onStart:["startEvent","start"],onComplete:["completeEvent","complete"],onSuccess:["successEvent","success"],onFailure:["failureEvent","failure"],onUpload:["uploadEvent","upload"],onAbort:["abortEvent","abort"]},setProgId:function(A){this._msxml_progid.unshift(A);},setDefaultPostHeader:function(A){if(typeof A=="string"){this._default_post_header=A;}else{if(typeof A=="boolean"){this._use_default_post_header=A;}}},setDefaultXhrHeader:function(A){if(typeof A=="string"){this._default_xhr_header=A;}else{this._use_default_xhr_header=A;}},setPollingInterval:function(A){if(typeof A=="number"&&isFinite(A)){this._polling_interval=A;}},createXhrObject:function(F){var E,A;try{A=new XMLHttpRequest();E={conn:A,tId:F};}catch(D){for(var B=0;B<this._msxml_progid.length;++B){try{A=new ActiveXObject(this._msxml_progid[B]);E={conn:A,tId:F};break;}catch(C){}}}finally{return E;}},getConnectionObject:function(A){var C;var D=this._transaction_id;try{if(!A){C=this.createXhrObject(D);}else{C={};C.tId=D;C.isUpload=true;}if(C){this._transaction_id++;}}catch(B){}finally{return C;}},asyncRequest:function(F,C,E,A){var D=(this._isFileUpload)?this.getConnectionObject(true):this.getConnectionObject();var B=(E&&E.argument)?E.argument:null;if(!D){return null;}else{if(E&&E.customevents){this.initCustomEvents(D,E);}if(this._isFormSubmit){if(this._isFileUpload){this.uploadFile(D,E,C,A);return D;}if(F.toUpperCase()=="GET"){if(this._sFormData.length!==0){C+=((C.indexOf("?")==-1)?"?":"&")+this._sFormData;}}else{if(F.toUpperCase()=="POST"){A=A?this._sFormData+"&"+A:this._sFormData;}}}if(F.toUpperCase()=="GET"&&(E&&E.cache===false)){C+=((C.indexOf("?")==-1)?"?":"&")+"rnd="+new Date().valueOf().toString();}D.conn.open(F,C,true);if(this._use_default_xhr_header){if(!this._default_headers["X-Requested-With"]){this.initHeader("X-Requested-With",this._default_xhr_header,true);}}if((F.toUpperCase()==="POST"&&this._use_default_post_header)&&this._isFormSubmit===false){this.initHeader("Content-Type",this._default_post_header);}if(this._has_default_headers||this._has_http_headers){this.setHeader(D);}this.handleReadyState(D,E);D.conn.send(A||"");if(this._isFormSubmit===true){this.resetFormState();}this.startEvent.fire(D,B);if(D.startEvent){D.startEvent.fire(D,B);}return D;}},initCustomEvents:function(A,C){var B;for(B in C.customevents){if(this._customEvents[B][0]){A[this._customEvents[B][0]]=new YAHOO.util.CustomEvent(this._customEvents[B][1],(C.scope)?C.scope:null);A[this._customEvents[B][0]].subscribe(C.customevents[B]);}}},handleReadyState:function(C,D){var B=this;var A=(D&&D.argument)?D.argument:null;if(D&&D.timeout){this._timeOut[C.tId]=window.setTimeout(function(){B.abort(C,D,true);},D.timeout);}this._poll[C.tId]=window.setInterval(function(){if(C.conn&&C.conn.readyState===4){window.clearInterval(B._poll[C.tId]);delete B._poll[C.tId];if(D&&D.timeout){window.clearTimeout(B._timeOut[C.tId]);delete B._timeOut[C.tId];}B.completeEvent.fire(C,A);if(C.completeEvent){C.completeEvent.fire(C,A);}B.handleTransactionResponse(C,D);}},this._polling_interval);},handleTransactionResponse:function(F,G,A){var D,C;var B=(G&&G.argument)?G.argument:null;try{if(F.conn.status!==undefined&&F.conn.status!==0){D=F.conn.status;}else{D=13030;}}catch(E){D=13030;}if(D>=200&&D<300||D===1223){C=this.createResponseObject(F,B);if(G&&G.success){if(!G.scope){G.success(C);}else{G.success.apply(G.scope,[C]);}}this.successEvent.fire(C);if(F.successEvent){F.successEvent.fire(C);}}else{switch(D){case 12002:case 12029:case 12030:case 12031:case 12152:case 13030:C=this.createExceptionObject(F.tId,B,(A?A:false));if(G&&G.failure){if(!G.scope){G.failure(C);}else{G.failure.apply(G.scope,[C]);}}break;default:C=this.createResponseObject(F,B);if(G&&G.failure){if(!G.scope){G.failure(C);}else{G.failure.apply(G.scope,[C]);}}}this.failureEvent.fire(C);if(F.failureEvent){F.failureEvent.fire(C);}}this.releaseObject(F);C=null;},createResponseObject:function(A,G){var D={};var I={};try{var C=A.conn.getAllResponseHeaders();var F=C.split("\n");for(var E=0;E<F.length;E++){var B=F[E].indexOf(":");if(B!=-1){I[F[E].substring(0,B)]=F[E].substring(B+2);}}}catch(H){}D.tId=A.tId;D.status=(A.conn.status==1223)?204:A.conn.status;D.statusText=(A.conn.status==1223)?"No Content":A.conn.statusText;D.getResponseHeader=I;D.getAllResponseHeaders=C;D.responseText=A.conn.responseText;D.responseXML=A.conn.responseXML;if(G){D.argument=G;}return D;},createExceptionObject:function(H,D,A){var F=0;var G="communication failure";var C=-1;var B="transaction aborted";var E={};E.tId=H;if(A){E.status=C;E.statusText=B;}else{E.status=F;E.statusText=G;}if(D){E.argument=D;}return E;},initHeader:function(A,D,C){var B=(C)?this._default_headers:this._http_headers;B[A]=D;if(C){this._has_default_headers=true;
}else{this._has_http_headers=true;}},setHeader:function(A){var B;if(this._has_default_headers){for(B in this._default_headers){if(YAHOO.lang.hasOwnProperty(this._default_headers,B)){A.conn.setRequestHeader(B,this._default_headers[B]);}}}if(this._has_http_headers){for(B in this._http_headers){if(YAHOO.lang.hasOwnProperty(this._http_headers,B)){A.conn.setRequestHeader(B,this._http_headers[B]);}}delete this._http_headers;this._http_headers={};this._has_http_headers=false;}},resetDefaultHeaders:function(){delete this._default_headers;this._default_headers={};this._has_default_headers=false;},setForm:function(M,H,C){var L,B,K,I,P,J=false,F=[],O=0,E,G,D,N,A;this.resetFormState();if(typeof M=="string"){L=(document.getElementById(M)||document.forms[M]);}else{if(typeof M=="object"){L=M;}else{return;}}if(H){this.createFrame(C?C:null);this._isFormSubmit=true;this._isFileUpload=true;this._formNode=L;return;}for(E=0,G=L.elements.length;E<G;++E){B=L.elements[E];P=B.disabled;K=B.name;if(!P&&K){K=encodeURIComponent(K)+"=";I=encodeURIComponent(B.value);switch(B.type){case"select-one":if(B.selectedIndex>-1){A=B.options[B.selectedIndex];F[O++]=K+encodeURIComponent((A.attributes.value&&A.attributes.value.specified)?A.value:A.text);}break;case"select-multiple":if(B.selectedIndex>-1){for(D=B.selectedIndex,N=B.options.length;D<N;++D){A=B.options[D];if(A.selected){F[O++]=K+encodeURIComponent((A.attributes.value&&A.attributes.value.specified)?A.value:A.text);}}}break;case"radio":case"checkbox":if(B.checked){F[O++]=K+I;}break;case"file":case undefined:case"reset":case"button":break;case"submit":if(J===false){if(this._hasSubmitListener&&this._submitElementValue){F[O++]=this._submitElementValue;}J=true;}break;default:F[O++]=K+I;}}}this._isFormSubmit=true;this._sFormData=F.join("&");this.initHeader("Content-Type",this._default_form_header);return this._sFormData;},resetFormState:function(){this._isFormSubmit=false;this._isFileUpload=false;this._formNode=null;this._sFormData="";},createFrame:function(A){var B="yuiIO"+this._transaction_id;var C;if(YAHOO.env.ua.ie){C=document.createElement('<iframe id="'+B+'" name="'+B+'" />');if(typeof A=="boolean"){C.src="javascript:false";}}else{C=document.createElement("iframe");C.id=B;C.name=B;}C.style.position="absolute";C.style.top="-1000px";C.style.left="-1000px";document.body.appendChild(C);},appendPostData:function(A){var D=[],B=A.split("&"),C,E;for(C=0;C<B.length;C++){E=B[C].indexOf("=");if(E!=-1){D[C]=document.createElement("input");D[C].type="hidden";D[C].name=decodeURIComponent(B[C].substring(0,E));D[C].value=decodeURIComponent(B[C].substring(E+1));this._formNode.appendChild(D[C]);}}return D;},uploadFile:function(D,N,E,C){var I="yuiIO"+D.tId,J="multipart/form-data",L=document.getElementById(I),O=this,K=(N&&N.argument)?N.argument:null,M,H,B,G;var A={action:this._formNode.getAttribute("action"),method:this._formNode.getAttribute("method"),target:this._formNode.getAttribute("target")};this._formNode.setAttribute("action",E);this._formNode.setAttribute("method","POST");this._formNode.setAttribute("target",I);if(YAHOO.env.ua.ie){this._formNode.setAttribute("encoding",J);}else{this._formNode.setAttribute("enctype",J);}if(C){M=this.appendPostData(C);}this._formNode.submit();this.startEvent.fire(D,K);if(D.startEvent){D.startEvent.fire(D,K);}if(N&&N.timeout){this._timeOut[D.tId]=window.setTimeout(function(){O.abort(D,N,true);},N.timeout);}if(M&&M.length>0){for(H=0;H<M.length;H++){this._formNode.removeChild(M[H]);}}for(B in A){if(YAHOO.lang.hasOwnProperty(A,B)){if(A[B]){this._formNode.setAttribute(B,A[B]);}else{this._formNode.removeAttribute(B);}}}this.resetFormState();var F=function(){if(N&&N.timeout){window.clearTimeout(O._timeOut[D.tId]);delete O._timeOut[D.tId];}O.completeEvent.fire(D,K);if(D.completeEvent){D.completeEvent.fire(D,K);}G={tId:D.tId,argument:N.argument};try{G.responseText=L.contentWindow.document.body?L.contentWindow.document.body.innerHTML:L.contentWindow.document.documentElement.textContent;G.responseXML=L.contentWindow.document.XMLDocument?L.contentWindow.document.XMLDocument:L.contentWindow.document;}catch(P){}if(N&&N.upload){if(!N.scope){N.upload(G);}else{N.upload.apply(N.scope,[G]);}}O.uploadEvent.fire(G);if(D.uploadEvent){D.uploadEvent.fire(G);}YAHOO.util.Event.removeListener(L,"load",F);setTimeout(function(){document.body.removeChild(L);O.releaseObject(D);},100);};YAHOO.util.Event.addListener(L,"load",F);},abort:function(E,G,A){var D;var B=(G&&G.argument)?G.argument:null;if(E&&E.conn){if(this.isCallInProgress(E)){E.conn.abort();window.clearInterval(this._poll[E.tId]);delete this._poll[E.tId];if(A){window.clearTimeout(this._timeOut[E.tId]);delete this._timeOut[E.tId];}D=true;}}else{if(E&&E.isUpload===true){var C="yuiIO"+E.tId;var F=document.getElementById(C);if(F){YAHOO.util.Event.removeListener(F,"load");document.body.removeChild(F);if(A){window.clearTimeout(this._timeOut[E.tId]);delete this._timeOut[E.tId];}D=true;}}else{D=false;}}if(D===true){this.abortEvent.fire(E,B);if(E.abortEvent){E.abortEvent.fire(E,B);}this.handleTransactionResponse(E,G,true);}return D;},isCallInProgress:function(B){if(B&&B.conn){return B.conn.readyState!==4&&B.conn.readyState!==0;}else{if(B&&B.isUpload===true){var A="yuiIO"+B.tId;return document.getElementById(A)?true:false;}else{return false;}}},releaseObject:function(A){if(A&&A.conn){A.conn=null;A=null;}}};YAHOO.register("connection",YAHOO.util.Connect,{version:"2.7.0",build:"1796"});

var ie = (document.all)? true:false;
var console;

try {
  c = console.debug("Hey, you have Firebug. :)")
} catch(e) {
  var Console = Class.create();
  Console.prototype = {
    initialize: function() {},
    info: function(){},
    error: function(){},
    debug: function(){},
    warning: function(){},
    log: function(){}
  };
  
  var console = new Console();
}

trace = function(str) {
  try {
    if(document.all) {
      alert(str)
    } else {
      console.debug.apply(console, arguments);
    }
  } catch(e) {}

  return true;
}

Object.extend(Object, {
	reverse_merge: function(destination, defaults) {
		return Object.extend(Object.clone(defaults), destination);
	}
});

/* Move to number_ext.js */
Array.prototype.sum = function() {
  return (! this.length) ? 0 : this.slice(1).sum() +
      ((typeof this[0] == 'number') ? this[0] : 0);
};


/* Move to number_ext.js */
Number.prototype.commify = function () {
  var numStr = this.toString();
  var num = numStr.split('');

  // simplify by only accepting integers longer than 3 digits
  if ( numStr.match(/\D/) || num.length < 3 ) return numStr;
  num.reverse();
  numStr = num.join('');

  numStr = numStr.replace(/(\d\d\d)/g, "$1_marker_");
  // if we did one too many, take it back
  numStr = numStr.replace(/_marker_$/g, '');
  // replace the thousandth _marker_ with ',' or '.'
  numStr = numStr.replace(/_marker_/g, ",");

  num = numStr.split('');
  num.reverse();
  return num.join('');
}
EnumerableExt = {
  async_each: function(iterator) {
   var index = 0;
    this._each(function(value) {
        setTimeout(protect(iterator.bind(this, value, index++)), 10);
    }.bind(this));
    return this;
  }
};

Object.extend(Enumerable, EnumerableExt);
Object.extend(Array.prototype, EnumerableExt);
// Object.extend(Hash.prototype, EnumerableExt);
// Object.extend(ObjectRange.prototype, EnumerableExt);
// Object.extend(Ajax.Responders, EnumerableExt);
// Object.extend(Element.ClassNames.prototype, EnumerableExt);
Object.extend(String.prototype, {
  pluralize: function(num) {
    if (num == '1') {
      return this;
    } else {
      if (this.endsWith('y')) {
        plural = this.slice(0, this.lastIndexOf('y')) + 'ies';
      } else {
        if (this.endsWith('s')) {
          plural = this;
        } else {
          plural = this + 's';
        }
      }
      return plural;
    }
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  startsWith: function(pattern) {
		if(this.length < pattern.length){ return false; }
    return this.indexOf(pattern) == 0;
  },

  endsWith: function(pattern) {
		if(this.length < pattern.length){ return false; }
    return this.lastIndexOf(pattern) == (this.length - pattern.length);
  },
  
  times: function(count) {
    var result = '';
    for (var i = 0; i < count; i++) result += this;
    return result;
  },
  possessify: function() {
    if (this.endsWith('y')) {
      plural = this + "'s";
    } else {
      if (this.endsWith('s')) {
        plural = this + "'";
      } else {
        plural = this + "'s";
      }
    }
    return plural;
  }
});
Object.extend(Selector, {
  findElements: function(elements, expression) {
    if (typeof expression == 'number') index = expression, expression = false;
    return Selector.matchElements(elements, expression || '*');
  }
});
Element.addMethods({
  
  autoHide: function(element, hide_element, callback) {
    var hide_element = hide_element === undefined ? element : hide_element;
    var cb = callback === undefined ? null : callback;
    document.getElementsByTagName('body')[0].onmousedown = hide_element.do_on_click_outside.bind({element: element, to_hide: hide_element, callback: cb});
  },
  
  do_on_click_outside: function(options, event) {
    var target = ie ? window.event.srcElement : event.target;
    element = options.element;
    if($(target).outside(element)) {
      to_hide = options.to_hide || element;
      document.onmouseup = null; document.onmousedown = null;
      to_hide.hide();
      if(options.callback != null) options.callback();
    }
  },
  
  dockTo: function(element, target, options) {
    client_width = document.documentElement.clientWidth;
    target_pos = options.offset_type == undefined ? $(target).fixedCumulativeOffset() : $(target)[options.offset_type]();
    target_dim = $(target).getDimensions();
    element_dim = element.getDimensions();
    options.offset = options.offset == undefined ? [0,0] : options.offset;
    element.target = target;
    options.target_point = options.target_point == undefined ? 'bl' : options.target_point
    
    if(options.target_point == 'tl') {
      new_top = target_pos.top + options.offset[0];
      new_left = target_pos.left + options.offset[1];
    } else if(options.target_point == 'tr') {
      new_top = target_pos.top + options.offset[0];
      new_left = target_pos.left+target_dim.width + options.offset[1];
    } else if(options.target_point == 'bl') {
      new_top = target_pos.top+target_dim.height + options.offset[0];
      new_left = target_pos.left + options.offset[1];
    } else if(options.target_point == 'br') {
      new_top = target_pos.top+target_dim.height + options.offset[0];
      new_left = target_pos.left+target_dim.width + options.offset[1];
    }
    
    if(new_left+element_dim.width<client_width) {
      element.removeClassName('pos_left');
      element.addClassName('pos_right');
      client_left = new_left;
    } else { // flip horizontally
      element.removeClassName('pos_right');
      element.addClassName('pos_left');
      if (options.target_point == 'tl' || options.target_point == 'bl') {
        client_left = (new_left+target_dim.width)-element_dim.width;
      } else {
        client_left = new_left-element_dim.width-target_dim.width;
      }
    }
    element.setStyle({left: client_left+'px', top: new_top+'px'})
    if(options.should_show || options.should_show == null) { 
      element.show();
      options.should_show = true;
    }

  },
  
  dockedTo: function(docked_element) {
    return $(docked_element).target;
  },
  
  undock: function(docked_element, should_hide) {
    if(should_hide == null){ should_hide = true}
    $(docked_element).target = null;
    
    if(should_hide){ $(docked_element).hide(); }
  },
  
  fixedCumulativeOffset: function(element) {
    // Fix parentNode borderWidth / clientLeft/Top bug [#188]
    // http://prototype.lighthouseapp.com/projects/8886/tickets/188
    offset = element.cumulativeOffset();
    borderLeftWidth = parseInt(element.up().getStyle("borderLeftWidth")) || 0;
    borderTopWidth = parseInt(element.up().getStyle("borderTopWidth")) || 0;
    valueL = parseInt(offset.left+borderLeftWidth);
    valueT = parseInt(offset.top+borderTopWidth);
    return Element._returnOffset(valueL, valueT);
  },
  
  outside: function(element, scope) {
    element = $(element).firstChild != null ? $(element).firstChild : $(element);
    scope = $(scope);
    return !Element.childOf(element, scope);
  },
  
  onmouseinside: function(element, callback) {
    element = $(element);
    element.inside_callback = callback;
    element.onmouseover = Element.handle_inside_outside.bind(this, element);
    element.onmouseout = Element.handle_inside_outside.bind(this, element);
  },
  
  onmouseoutside: function(element, callback) {
    element = $(element);
    element.outside_callback = callback;
    element.onmouseover = Element.handle_inside_outside.bind(this, element);
    element.onmouseout = Element.handle_inside_outside.bind(this, element);
  },
  
  handle_inside_outside: function(el, event) {
    if (!event) event = window.event;
    // trace(event);
    el = $(el);
    
    switch(event.type) {
      case 'mouseout':
        var related = (typeof event.relatedTarget != 'undefined' ? event.relatedTarget : event.toElement); 
      
       // trace(event.target + ", " + el)
        if(el.outside_callback && $(related).outside(el)) {
          el.outside_callback(el);
          el._outside_callback = el.outside_callback;
          el.outside_callback = null;
        }
        if(el._inside_callback) {
          el.inside_callback = el._inside_callback;
          el._inside_callback = null;
        }
      break;
      case 'mouseover':
        var related = (typeof event.relatedTarget != 'undefined' ? event.relatedTarget : event.fromElement); 
      
    	  // trace(event.target + ", " + el)
        if(el.inside_callback && $(related).outside(el)) {
          el.inside_callback(el);
          el._inside_callback = el.inside_callback;
          el.inside_callback = null;
        }
        if(el._outside_callback) {
          el.outside_callback = el._outside_callback;
          el._outside_callback = null;
        }
      break;
      default: trace("bad juju");
    }
  },
  
  tabToggle: function(element, selector, klassName) {
    $(element).up().select(selector).invoke('removeClassName', klassName);
    $(element).addClassName(klassName);
  },
  
  swap: function(element, swap_element) {
    $(element).hide();
    $(swap_element).show();
  }
  
});
Object.extend(Form.Element.Methods, {
  getSafeValue: function(element) {
  	try {
  		return this.getValue(element);
  	} catch(e) {
  		return '';
  	}
  }
});

Object.extend(Form.Element, Form.Element.Methods);
Element.addMethods();

Form.Element.DelayedEventObserver = Class.create(Form.Element.EventObserver, {
  
  initialize: function($super, element, frequency, callback) {
    $super(element, callback);
    this.frequency = frequency;
  },
  
  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      if (this.timeout){ window.clearTimeout(this.timeout); }
        
      this.timeout = window.setTimeout(this.fire.bind(this), this.frequency * 1000);
    }
  },
  
  fire: function() {
    var value = this.getValue();
    this.callback(this.element, value);
    this.lastValue = value;
  },
  
  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        case 'text':
        case 'password':
        case 'textarea':
          Event.observe(element, 'keyup', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});
Object.extend(Element.ClassNames.prototype, {
  clear: function() {
    this.each(function(klass) { 
      this.remove(klass);
    }.bind(this));
  }
});

// following code is MIT licensed (C) Gary Haran 2007

/**
* Provide the same behavior as window.scrollTo to divs with overflow without removing
* the ability to scroll a page to a given element.
*/
Element.addMethods({
  scrollTo: function(element, left, top){
    var element = $(element);
    if (arguments.length == 1){
      var pos = element.cumulativeOffset();
      window.scrollTo(pos[0], pos[1]);
    } else {
      element.scrollLeft = left;
      element.scrollTop  = top;
    }
    return element;
  }
});

/**
* Effect.Scroll allows you to animate scrolling on a page (or div w/ overflow: scroll || auto)
*/
Effect.Scroll = Class.create();
Object.extend(Object.extend(Effect.Scroll.prototype, Effect.Base.prototype), {
  initialize: function(element) {
    this.element = $(element);
    if(!this.element) throw(Effect._elementDoesNotExistError);
    this.start(Object.extend({x: 0, y: 0}, arguments[1] || {}));
  },
  setup: function() {
    var scrollOffsets = (this.element == window)
                ? document.viewport.getScrollOffsets()
                : {left: this.element.scrollLeft, top: this.element.scrollTop};
    this.originalScrollLeft = scrollOffsets.left;
    this.originalScrollTop  = scrollOffsets.top;
  },
  update: function(pos) {
    this.element.scrollTo(Math.round(this.options.x * pos + this.originalScrollLeft), Math.round(this.options.y * pos + this.originalScrollTop));
  }
});


InlineLogin = {
  
  // ===== DOCUMENT ASSET METHODS ==================================================================
  
  /* Returns the container element used to load the inline login flow. */
  container: function() {
    return (this.current_action.container || $('inline_login'));
  },
  
  // ===== LOGIN LIFECYCLE METHODS =================================================================
  // Methods & callbacks invoked at various points within the login process.
  
  /**
   * Convenience method that calls login_an_do, and reloads the current page when the user has
   * logged in or signed up.
   */
  login_and_reload: function(options) {
    this.login_and_do(null, function() { window.location.reload(); }, options);
    return false;
  },
  
  login_and_redirect: function(options) {
    this.login_and_do(null,
                      function() { window.location.href = this.login_redirect_url(); }.bind(this),
                      options);
    return false;
  },
  
  login_redirect_url: function() {
    var redirect_url = page.login_trackback();
    if (redirect_url == null || redirect_url.blank()) {
      // no login_trackback cookie set, so try to determine a redirect URL from query parameters, 
      // etc
      
      var params = window.location.href.toQueryParams();
      if (params['redirect'] && !params['redirect'].blank()) {
        // use the explicit return url
        redirect_url = params['redirect']
      } else if (page.company) {
        // redirect to the current company
        redirect_url = "/"+ page.company
      } else if (params['company'] && !params['company'].blank()) {
        // redirect to the specified company
        redirect_url = "/" + params['company']
      } else if (current_user) {
        // redirect to the user's dashboard
        redirect_url = '/me'
      } else {
        // default to the home page
        redirect_url = "/"
      }
    }
    
    return redirect_url;
  },
  
  /**
   * Like #login_and_do, but it presents the user the registration screen by default. This is used
   * by all 'Sign up' links.
   */
  sign_up_and_do: function(position_anchor, callback, options) {
    options = options || {}
    options.params = options.params || {}
    options.params.login_mode = 'signup'
    
    this.login_and_do(position_anchor, callback, options)
  },
  
  /*
   * Initiates the inline login flow, performing the given callback function when login has
   * completed.
   *
   * `position_anchor` is an element to align the login with. (deprecated)
   * `callback` is a Function to call once the user has logged in.
   * `options` is an object with any of the following properties:
   *    
   *    `cancel_login`: A function invoked when the user cancels the login.
   *    `fail`:         A function invoked when an Ajax request fails.
   *    `params`:       Parameter hash provided to the Ajax request.
   *    `prompt`:       A customized login prompt.
   *
   */
  login_and_do: function(position_anchor, callback, options) {
    if (page.logged_in()) {
      // already logged in, so just execute the callback
      if (callback != null) { callback() }
    } else {
      if (options == null)  { options = {} }
      
      this.current_action = {
        position_anchor:  $(position_anchor),
        container:        options.container, 
        options:          options,
        
        onLoad:           (options.onLoad || function() {}),
        
        callback:         (callback || function() {}),
        fail:             (options.fail || function() {}),
        cancel_login:     (options.cancel_login || function() {}), 
        params:           (options.params || {}),
        
        login_prompt:     options.prompt
      };
      if (page.company) { this.current_action.params.company = page.company }
      
      this.embed();
    }
  },
  
  /**
   * Makes a call to /login to determine the appropriate login mode and to get a copy of the login
   * panels. It then embeds the panels and starts the appropriate login based on the server's 
   * response.
   */
  embed: function() {
    var self = this
    new Ajax.Request("/logins/new", {
      asynchronous: true,
      method:       'get',
      parameters:   this.current_action.params,
      evalScripts:  false,
      onSuccess:    function(response) {
        result = response.responseText.evalJSON();
        self.container().update(result.login_panels);
        self.load(result.login_mode);
      },
      onFailure:    function() { self.request_failed(); }
    });
  },
  
  /*
   * Called when the initial Ajax request fails.
   */
  request_failed: function() {
    if (this.current_action) {
      this.current_action.fail();
      this.current_action = null;
    }
  },
  
  /*
   * Called when the user wants to cancel the current login attempt.
   */
  cancel: function() {
    this.container().hide();
    var the_content = this.container().down('div.content');
    if (the_content) { the_content.update('') }
    
    if (this.current_action != null) {
      this.current_action.cancel_login();
      this.current_action = null;
    }
  },
  
  /*
   * Called when the user has been successfully logged in.
   */
  complete: function() {
    page.on_login(); // notify page elements of login
    if (this.current_action) {
      this.current_action.callback();
      this.current_action = null;
    }
  },
  
  load: function(login_mode) {
    var self = this
    page.async(function() {
      self.init();
      if (self.current_action) {
        self.current_action.onLoad(login_mode);
      }
    });
    
    switch (login_mode) {
      case 'fastpass':
        self.start_fastpass_registration();
        break;
      case 'signover':
        self.start_signover();
        break;
      case 'master_password':
        self.start_set_master_password();
        break;
      case 'signup':
        self.start_registration();
        break;
      default:
        self.start_login();
    }
  },
  
  init: function() {
    // introspect all init_XXX methods and invoke them
    for (property in this) {
      if (property.startsWith("init_") && (typeof this[property] == 'function')) {
        this[property].bind(this)();
      }
    }
  },
  
  // ===== ACCOUNT LOGIN ===========================================================================
  // Methods for handling logging into an existing account, or via a third-party provider.
  
  init_login: function() {
    this.login_form().observe('submit', this.submit_login_form.bind(this));
  },
  
  start_login: function() {
    this.show_only('#sign_in_pane');
    
    var email_field = this.login_form().down('#email');
    email_field.setAttribute("autocorrect", "off");
    email_field.setAttribute("autocapitalize", "off");
    email_field.focus();
  },
  
  login_form: function() {
    return this.container().down('#login_form');
  },
  
  /*
   * Submits the login form, and completes the login if successful.
   */
  submit_login_form: function(ev) {
    if (ev != null) { Event.stop(ev); }
    if (page.validate_form(this.login_form())) {
      this.login_form().request({
        evalScripts:true,
        headers: {Accept: 'text/javascript'},
        onSuccess: this.complete.bind(this)
      })
    }
  },
  
  /* Displays the closed account pane when the user's accunt has previously been closed. */
  show_closed_account: function() {
    this.show_only('#closed_account');
  },
  
  /*
   * Called when the user clicks on an identity provider button.
   */
  provider_tab_clicked: function(tab_elem) {
    var tab = $(tab_elem);
    var match = tab.id.match(/^([^_]\w+)+_provider_tab$/);
    if (match != null) {
      var provider_name = match[1];
      this.select_provider(provider_name);
    }
  },
  
  /*
   * Selects an identity provider to login with, displaying its login panel.
   */
  select_provider: function(provider_name) {
    this.select_element_in_set(provider_name + '_provider_tab', '.provider_tab', 'on')
    this.select_element_in_set(provider_name + '_login_panel', '.provider_login_panel')
  },
  
  // ===== THIRD PARTY LOGIN =======================================================================
  
  init_third_party_login: function() {
    var self = this;
    // bind submit listeners to all login forms.
    this.container().select('.provider_login_panel').each(function(panel) {
      if (panel.id != ('getsatisfaction_login_panel')) {
        var submit = panel.down('form .submit');
        if (submit != null) {
          submit.observe('click', self.start_third_party_login.bind(self, panel));
        } else {
          console.log("Expected panel to have a .submit descendent!");
          console.log(panel);
        }
      }
    })
    
    this.receive_form().observe('submit', this.submit_receive_form.bind(this));
    
    // disable password entry by default, but provide a checkbox to allow them to click if they have
    // an account already. Displayed when logging in with a new identity that doesn't have a 
    // checkbox
    this.disable_identity_password_field();
    this.existing_account_checkbox().observe('click', 
                                             this.existing_account_checkbox_clicked.bind(this));
  },
  
  submit_receive_form: function(ev) {
    if (ev != null) { Event.stop(ev); }
    
    var receive_form = this.receive_form();
    if (page.validate_form(receive_form)) {
      receive_form.request({
        headers: {Accept: 'text/javascript'},
        onComplete: function(response) {
          var result = response.responseText.evalJSON();
          if (result == null || result.status == null) {
            console.log("Unexpected response from server:");
            console.log(response);
            InlineLogin.show_message("The server returned an unexpected response. Please try " +
                                     "again, or contact us if the error continues.");
          } else {
            InlineLogin.receive_identity_from_server(result);
          }
        }
      })
    }
  },
  
  receive_form: function() {
    return this.container().down("#receive_identity_pane form#receive_form");
  },
  
  start_third_party_login: function(panel, ev) {
    if (ev != null) { Event.stop(ev); }
    var login_form = panel.down('form');
    if (page.validate_form(login_form)) {
      var panel_type = panel.id.gsub(/_login_panel$/, '');
      var login_window_name = panel_type + "_login_window";
      login_form.writeAttribute('target', login_window_name);
      
      // open a new window...
      this.display_login_window("", login_window_name);
      
      // submit the form to the new window
      login_form.submit();
      
      //
      var panel_tab_id = "#" + panel_type + "_provider_tab";
      var provider_tab_name = this.container().down(panel_tab_id + " .tab_name");
      if (provider_tab_name) {
        var provider_name = provider_tab_name.innerHTML || ''
        this.container().select('#waiting_for_identity_pane .provider_name').each(function(e) {
          e.innerHTML = provider_name;
        });
      } else {
        console.log("Failed to find tab_name within " + panel_tab_id);
      }
      
      this.show_only('#waiting_for_identity_pane');
    }
  },
  
  
  // ----- RECEIVE/ACCEPT IDENTITY CALLBACKS -------------------------------------------------------
  // These methods are called via RJS or the popup window after processing a third party identity.
  // An 'accepted' identity is one that was successfully bound to a (possibly new) user account. A
  // 'received' identity is one that could not be bound to an account, due to a conflict or missing
  // profile data.
  
  /**
   * Proxy method that accepts a JSON response object from a receive/accept attempt and routes it to
   * `identity_received` or `identity_accepted`. This method will be called by the inline login
   * popup window after the user has successfully authenticated themselves. It's also called by
   * `submit_receive_form` after the completion of the request.
   */
  receive_identity_from_server: function(result) {
    if (result.status == 'accepted') {
      this.identity_accepted(result.identity);
    } else {
      this.identity_received(result);
    }
  },
  
  /**
   * Callback invoked when an identity has been received, but could not be accepted.
   */
  identity_received: function(result) {
    var status    = result.status;
    var message   = result.message;
    var token     = result.token;
    var identity  = result.identity;
    
    this.show_only('#receive_identity_pane');
    
    // set the hidden token field
    this.update_elements_with_value("#receive_identity_pane input.auth_info_token", token);
    
    // Focus the email field
    var email_field = this.receive_form_email_field();
    email_field.setAttribute("autocorrect", "off");
    email_field.setAttribute("autocapitalize", "off");
    
    // update the real name
    var real_name =
      (identity.display_name || identity.formatted_name || identity.preferred_username || '');
    if (real_name.blank()) {
      this.enable_identity_name_input();
      this.receive_form_name_field().value = result.nick || real_name;
    } else {
      this.disable_identity_name_input();
    }
    
    this.update_elements_with_value('#receive_identity_pane .name', real_name);
    
    // if the identity didn't come with a preferred_username or a formatted_name, show the name
    // field
    
    // update the avatar photo
    var photo_url = identity.photo_url || '/images/user_default_medium.png'
    this.container().select('#receive_identity_pane .image').each(function(photo_elem) {
      if (photo_elem.name == 'img') {
        photo_elem.src = photo_url;
      } else {
        photo_elem.innerHTML =
          "<img src='" + photo_url.escapeHTML() + "' " +
                "alt='" + real_name + "' " + 
                "width='55' height='55' " +
                "/>";
      }
    });
    
    if (status == 'passwordless_unverified_account') {
      // The email matches an unverified account, but a password doesn't exist so we must
      // ask the user to confirm their email.
      var email = (result.email || identity.verified_email)
      email_field.value = email;
      
      this.prompt_for_login_token_code(email, result.login_token_hash);
    } else if (status == 'invalid_login_token_code') {
      // the user entered a login token, but it failed
      this.show_message("The login code is incorrect. Please try again.");
      // TODO: show a link allowing a new login token to be sent
    } else if (status == 'unverified_account') {
      // The verified email matches an unverified account. A password exists, so ask them to confirm
      // their email.
      email_field.value = identity.verified_email;
      this.prompt_for_existing_account_password();
    } else if (status == 'unverified_email') {
      // the email from this identity hasn' been verified. Ask them to confirm it...
      email_field.focus();
    } else if (status == 'invalid_email') {
      this.show_identity_response_message(result, "Email is invalid");
      email_field.focus();
    } else if (status == 'email_required') {
      this.show_identity_response_message(result, "Email is required");
      email_field.focus();
    } else if (status == 'invalid_password') {
      this.show_identity_response_message(result, "Invalid password");
      this.receive_form().down('#identity_password').focus();
    } else if (status == 'password_required') {
      // The provided (unverified) email is associated with an account, and a password is required
      // to bind the identity.
      email_field.value = result.email;
      this.prompt_for_existing_account_password();
    } else {
      if (result.message != null) {
        this.show_message(result.message.escapeHTML());
      } else {
        this.show_message("An unknown error occurred");
      }
      
      console.log("Unknown response status: ");
      console.log(status);
    }
  },
  
  show_identity_response_message: function(result, default_msg) {
    if (result.message != null && !result.message.blank()) {
      this.show_message(result.message.escapeHTML());
    } else if (default_msg != null) {
      this.show_message(default_msg);
    }
  },
  
  /*
   * Invoked when the user clicks the 'Forgot password?' link after an identity is received.
   */
  forgot_identity_password: function() {
    var email = this.receive_form().down('.email input.text').value
    this.request_reset_password(email, function(token) {
      // hide password fields
      this.disable_identity_email_input();
      this.hide_existing_account_selector();
      this.disable_identity_password_field();
      this.enable_identity_reset_password_fields(token);
      this.show_message("We've sent a confirmation token to " + email.escapeHTML() + ". Check " +
                        "your email and enter the token below, along with your new " +
                        "password.");
    }.bind(this))
  },
  
  enable_identity_reset_password_fields: function(token) {
    this.enable_form_row(this.receive_form().down('.reset_password'), true);
    this.enable_form_row(this.receive_form().down('.reset_password_confirmation'), true);
    this.enable_form_row(this.receive_form().down('.reset_password_token'), true);
    
    $('reset_password_token_hash').value = token
  },
  
  disable_identity_reset_password_fields: function(token) {
    this.disable_form_row(this.receive_form().down('.reset_password'));
    this.disable_form_row(this.receive_form().down('.reset_password_confirmation'));
    this.disable_form_row(this.receive_form().down('.reset_password_token'));
  },
  
  receive_form_name_field: function() {
    return this.receive_form().down('.real_name input');
  },
  
  disable_identity_name_input: function() {
    this.disable_field_input(this.receive_form_name_field());
    this.receive_form().down('.real_name').hide();
  },
  
  enable_identity_name_input: function() {
    this.enable_field_input(this.receive_form_name_field());
    this.receive_form().down('.real_name').show();
  },
  
  receive_form_email_field: function() {
    return this.receive_form().down('.email input');
  },
  
  disable_identity_email_input: function() {
    this.disable_field_input(this.receive_form_email_field());
  },
  
  enable_identity_email_input: function() {
    this.enable_field_input(this.receive_form_email_field());
  },
  
  /*
   * Returns the checkbox a user can click to provide a password for an email.
   */
  existing_account_checkbox: function() {
    return this.receive_form().down('#existing_account');
  },
  
  /*
   * Called when the user clicks the checkbox to enter a password for an email.
   */
  existing_account_checkbox_clicked: function(ev) {
    this.toggle_identity_password_field();
  },
  
  
  /* Hides the checkbox that allows the user to choose to login with an existing account. */
  hide_existing_account_selector: function() {
    var selector = this.receive_form().down('.selector');
    selector.hide();
  },
  
  prompt_for_existing_account_password: function() {
    this.show_message("This email is in use with an existing account. Please login with the " +
                      "password for this account.");
    
    // show the password field
    this.hide_existing_account_selector();
    this.disable_identity_email_input();
    this.enable_identity_password_field();
    this.disable_login_token_fields();
    
    this.receive_form().down('#identity_password').focus();
  },
  
  /**
   * Determines if the password field is enabled, and toggles its state.
   */
  toggle_identity_password_field: function() {
    var password_row = this.receive_form().down('div.password');
    var password_input = password_row.down('input');
    if (password_input.disabled) {
      this.enable_identity_password_field();
    } else {
      this.disable_identity_password_field();
    }
  },
  
  /*
   * Displays the account password field, and marks it as required. This is done whenever the user
   * attempts to login with an existing email address.
   */
  enable_identity_password_field: function() {
    this.enable_form_row($('identity_password').up('.row'), true)
    $('existing_account').checked = true
  },
  
  /*
   * Hides and unrequires the password field within the receive_identity form. This is the default
   * state, and is invoked to reset the form, and when the user unchecks the existing account 
   * selector checkbox.
   */
  disable_identity_password_field: function() {
    this.disable_form_row($('identity_password').up('.row'));
    $('existing_account').checked = false
  },
  
  prompt_for_login_token_code: function(email, hash) {
    this.show_message("This email is in use with an existing account. We've sent an email to " +
                      email.escapeHTML() +
                      " containing a one-time login token. Please check your email and " +
                      "enter the email in the field below.");
    
    // show the password field
    this.hide_existing_account_selector();
    this.disable_identity_email_input();
    this.disable_identity_password_field();
    
    this.enable_login_token_fields(hash);
    this.receive_form().down('#login_token_code').focus();
  },
  
  enable_login_token_fields: function(hash) {
    var token_hash_field = $('login_token_hash');
    token_hash_field.value = hash;
    token_hash_field.enable();
    
    this.enable_form_row($('login_token_code').up('.row'), true)
  },
  
  disable_login_token_fields: function() {
    var token_hash_field = $('login_token_hash');
    token_hash_field.disable();
    
    this.disable_form_row($('login_token_code').up('.row'))
  },
  
  /**
   * Opens an external login window. Currently used for third-party login, while 
   * display_signover_window() is used for the signover page.
   *
   * @param url The login URL.
   * @param window_name The name of the opened window.
   */
  display_login_window: function(url, window_name) {
    var width   = document.viewport.getWidth() * 0.9;
    var height  = document.viewport.getHeight() * 0.9;
    var left    = (screen.width / 2)  - (width / 2);
    var top     = (screen.height / 2) - (height / 2);
    
    login_window =
      window.open(url, window_name,
                  "menubar=1,resizable=1,scrollbars=yes," +
                  "width=" + width + 
                  ",height=" + height +
                  ",left=" + left +
                  ",top=" + top);
    login_window.focus();
  },
  
  
  /**
   * Callback invoked after an identity has been accepted.
   */
  identity_accepted: function(identity) {
    this.complete();
  },
  
  // ===== ACCOUNT CREATION ========================================================================
  
  init_registration: function() {
    this.registration_form().observe('submit', this.submit_registration_form.bind(this));
    this.initialize_recaptcha();
  },
  
  /* Initializes the Recaptcha container. */
  initialize_recaptcha: function() {
    recap_container = this.container().down("div.recaptcha_container")
    Recaptcha.create("6LfezwYAAAAAAHbwX3C9nJDrIw_nGcKuB_UvZyHg", recap_container, { theme: 'custom' });
  },
  
  start_registration: function() {
    this.show_only('#start_registration');
    $('user_email').setAttribute("autocorrect", "off");
    $('user_email').setAttribute("autocapitalize", "off");
    $('user_nick').focus();
  },
  
  submit_registration_form: function(ev) {
    if (ev != null) { Event.stop(ev); }
    if (page.validate_form(this.registration_form())) {
      this.registration_form().request({
        evalScripts:  true,
        headers:      {Accept: 'text/javascript'},
        onSuccess:    this.registration_succeeded.bind(this),
        on500:        this.registration_failed.bind(this)
      })
    }
  },
  
  registration_succeeded: function(response) {
    page.set_login_cookies(response.responseText); 
    page.on_login();
    var name_el = this.container().down('#registration_done').down(".name")
    name_el.update(current_user.name());
    
    var source = (this.registration_source() || 'inline');
    page.post_tracker("/tracking/signup/" + this.registration_source());
    page.adwords_conversion();
    this.show_only('#registration_done');
  },
  
  registration_failed: function(response) {
    this.show_message("<strong>Sorry!</strong><br />" + response.responseText)
    this.initialize_recaptcha();
    Recaptcha.reload();
  },
  
  registration_form: function() {
    return $('start_registration');
  },
  
  registration_source: function() {
    return this.registration_form().action.toQueryParams().source
  },
  
  // ===== RESET PASSWORD ==========================================================================
  
  /* Initializes the password reset markup after it's been loaded. */
  init_password_reset: function() {
    this.password_reset_form().observe('submit', this.submit_password_reset_form.bind(this));
  },
  
  /* Displays the password reset form. */
  start_password_reset: function() {
    this.show_only('#password_reset_form');
    $('email_for_reset').focus();
  },
  
  /* Returns the password reset form. */
  password_reset_form: function() {
    return this.container().down('#password_reset_form');
  },
  
  /* Submits the password_reset_form via an AJAX call. */
  submit_password_reset_form: function(ev) {
    if (ev != null) { Event.stop(ev); }
    if (page.validate_form(this.password_reset_form())) {
      this.password_reset_form().request({
        evalScripts:  true,
        parameters:   {inline: true},
        headers:      {Accept: 'text/javascript'},
        onSuccess:    this.password_reset_finished.bind(this),
        on404:        this.password_reset_failed.bind(this)
      })
    }
  },
  
  prompt_for_password_reset_token_code: function(email, hash) {
    this.show_message("We've sent you an email with a special code to reset your password. Check " +
                      "your email and enter the code below, along with your new password.");
    
    this.disable_password_reset_email_input();
    this.enable_password_reset_token_fields(hash);
    this.enable_password_reset_password_fields();
    
    this.password_reset_form().down('#password_reset_token_code').focus();
  },
  
  disable_password_reset_email_input: function(hash) {
    
    var token_hash_field = this.password_reset_form().down('#password_reset_token_hash')
    token_hash_field.enable();
    token_hash_field.value = hash;
    
    this.enable_form_row($('password_reset_token_code').up('.row'), true);
  },
  
  enable_password_reset_token_fields: function(hash) {
    var token_hash_field = this.password_reset_form().down('#password_reset_token_hash')
    token_hash_field.enable();
    token_hash_field.value = hash;
    
    this.enable_form_row($('password_reset_token_code').up('.row'), true);
  },
  
  disable_password_reset_token_fields: function() {
    var token_hash_field = this.password_reset_form().down('#password_reset_token_hash')
    token_hash_field.disable();
    this.disable_form_row($('password_reset_token_code').up('.row'));
  },
  
  enable_password_reset_password_fields: function(hash) {
    this.enable_form_row($('password_reset_password').up('.row'), true)
    this.enable_form_row($('password_reset_password_confirmation').up('.row'), true)
  },
  
  disable_password_reset_password_fields: function(hash) {
    this.disable_form_row($('password_reset_password').up('.row'))
    this.disable_form_row($('password_reset_password_confirmation').up('.row'))
  },
  
  /* Callback invoked when a reset attempt succeeds. */
  password_reset_finished: function() {
    this.show_message("<strong>Thanks!</strong> Check your email for a special link that will let you reset your password.");
    LoginAction.start_login();
  },
  
  /* Callback invoked when a reset attempt fails. */
  password_reset_failed: function() {
    this.show_message("<strong>Sorry!</strong> that email isn't registered")
  },
  
  request_reset_password: function(email, callback) {
    new Ajax.Request('/login/request_reset_password', {
      method: 'get',
      parameters: {email: email},
      onSuccess: function(response) {
        if (response.responseText.isJSON()) {
          var token = response.responseText.evalJSON()
          if (token == null) {
            InlineLogin.show_message(email.escapeHTML() + " isn't associated with any account");
          } else {
            callback(response.responseText.evalJSON());
          }
        } else {
          InlineLogin.show_message(
            'Received an unknown response after asking to reset your password.'
          )
        }
      },
      onError: function() {
        InlineLogin.show_message('An unknown error occurred while asking to reset your password.')
      } 
    })
  },
  
  // ===== FASTPASS REGISTRATION ===================================================================
  
  start_fastpass_registration: function() {
    this.show_only('#new_from_fastpass');
  },
  
  customize_fastpass: function(link) {
    var row = $(link).up(".row");
    row.down(".readonly").hide();
    row.down(".text").show().select();
    $(link).hide();
  },
  
  // ===== FASTPASS SIGNOVER =======================================================================
  // "Signover" is the process of asking the user to log into their account on another site. The
  // external site then handles the process of authenticating the user. Once they are done, the
  // external site forwards the user via FastPass.
  
  init_signover: function() {
    this.container().down('#signover_button').observe('click',
                                                      this.display_signover_window.bind(this));
  },
  
  start_signover: function() {
    this.show_only('#signover_form');
  },
  
  display_signover_window: function(ev) {
    if (ev != null) { Event.stop(ev); }
    
    var width   = 450;
    var height  = 500;
    var left    = (screen.width / 2)  - (width / 2);
    var top     = (screen.height / 2) - (height / 2);
    
    another_window =
      window.open(this.signover_url(), "Signover", 
                  "menubar=1,resizable=1,scrollbars=yes," +
                  "width=" + width + 
                  ",height=" + height +
                  ",left=" + left +
                  ",top=" + top);
    another_window.focus();
    
    this.show_signover_wait();
    setTimeout(this.wait_for_login.bind(this), 100);
  },
  
  signover_url: function() {
    return this.signover_button().href;
  },
  
  signover_button: function() {
    return this.container().down('#signover_button');
  },
  
  /* Shows a small panel while we wait for them to login via the popup window. */
  show_signover_wait: function() {
    this.show_only('#signover_wait');
  },
  
  wait_for_login: function() {
    if (page.logged_in()) {
      this.complete();
    } else {
      setTimeout(this.wait_for_login.bind(this), 100);
    }
  },
  
  // ===== FASTPASS SET MASTER PASSWORD ============================================================
  
  init_set_master_password: function() {
    this.set_master_password_form().observe('submit',
                                            this.submit_set_master_password_form.bind(this))
  },
  
  start_set_master_password: function() {
    this.show_only("#set_master_password")
  },
  
  set_master_password_form: function() {
    return $('set_master_password');
  },
  
  submit_set_master_password_form: function(ev) {
    if (ev != null) { Event.stop(ev); }
    if (page.validate_form(this.set_master_password_form())) {
      this.set_master_password_form().request({
        evalScripts:  true,
        parameters:   {inline: true},
        headers:      {Accept: 'text/javascript'}
      });
    }
  },
  
  // ===== MESSAGING ===============================================================================
  
  /*
   * Displays a message to the user in the visible panel. Typically used to display results of a
   * request.
   */
  show_message: function(message) {
    var msg_box = this.message_box();
    if (msg_box != null) {
      Effect.Appear(msg_box, { duration: 0.5 });
      msg_box.update(message);
    }
  },
  
  /*
   * Hides the active message box.
   */
  hide_message: function() {
    var msg_box = this.message_box();
    if (msg_box) {
      Effect.Fade(msg_box, { duration: 0.5 });
    }
  },
  
  /*
   * Returns the currently
   */
  message_box: function() {
    var pane_el = this.active_pane();
    if (!pane_el) { return; }
    
    return pane_el.down("div.msg");
  },
  
  // ===== PANEL MANAGEMENT ========================================================================
  // The inline login is composed of a variety of panels for each action (logging in, creating an
  // account, generating a temporary password, etc.). These methods show and hid various panels.
  
  wide_panes: $A(['#registration_done', '#sign_in_pane', 
                  '#start_registration', '#closed_account']),
  
  thin_panes: $A(['#signover_form', '#signover_wait', '#new_from_fastpass', '#password_reset_form',
                  "#set_master_password", '#receive_identity_pane', "#waiting_for_identity_pane"]),
  
  panes: function() {
    return this.wide_panes.concat(this.thin_panes);
  },
  
  /*
   * Returns the visible pane, or null if not found.
   */
  active_pane: function() {
    panes = this.container().select("*.pane");
    return $A(panes).detect(function(el) { return el.visible(); })
  },
  
  /*
   * Shows only a single panel, based on the given selector.
   */
  show_only: function(selector_to_show) {
    this.panes().each(function(selector) {
      var pane_el = this.container().down(selector);
      if (selector == selector_to_show) {
        pane_el.show();
      } else {
        pane_el.hide();
      }
    }.bind(this));
    
    if (this.thin_panes.include(selector_to_show)) {
      this.container().addClassName("thin");
    } else {
      this.container().removeClassName("thin");      
    }
  },
  
  // ===== DOM UTILITIES ===========================================================================
  
  /*
   * Adds the 'selected' class to the given element, making sure it is the only one within the
   * selected elements.
   */
  select_element_in_set: function(element, selector, class_name) {
    if (class_name == null) { class_name = 'selected' }
    this.container().select(selector).each(function(elem) {
      elem.removeClassName(class_name);
    })
    $(element).addClassName(class_name);
  },
  
  /*
   * Selects elements within the container element and updates their content to the given value. If
   * INPUT elements are selected, their value is updated, otherwise the content of the element is
   * replaced with the HTML-escaped value.
   */
  update_elements_with_value: function(selector, value) {
    this.container().select(selector).each(function(elem) {
      if (elem.tagName.toLowerCase() == 'input') {
        elem.value = value;
      } else {
        elem.update(value.escapeHTML());
      }
    });
  },
  
  /**
   * Enables all input elements within the given row (which can be an element or selector) and then
   * unhides the row. If required is `true`, the row is marked as a required. Used when a field is
   * only needed in certain contexts.
   */
  enable_form_row: function(row, required) {
    row = $(row);
    if (required == true) { row.addClassName('required') }
    row.select('input').each(function(input) {
      input.enable();
    });
    
    row.show();
  },
  
  /**
   * Disables all input elements within the given row (which can be an element or selector) and then
   * hides the row.
   */
  disable_form_row: function(row) {
    row = $(row);
    row.removeClassName('required');
    row.select('input').each(function(input) {
      input.disable();
    });
    row.hide();
  },
  
  /**
   * Enables input for the given form field, hiding any rendered version.
   */
  enable_field_input: function(form_field) {
    var row = form_field.up('.row');
    var display_field = row.down('.display')
    if (display_field != null) {
      form_field.show();
      
      display_field.down('.value').update('');
      display_field.hide();
    } else {
      form_field.enable();
    }
  },
  
  /**
   * Disables input for the given form field, and displays a rendered version of the value if 
   * possible. The field value is "rendered" by placing its value in a '.display span.value' 
   * element within the field's '.row' parent. Otherwise the field will simply be marked as 
   * disabled, and displayed as-is.
   */
  disable_field_input: function(form_field) {
    form_field = $(form_field)
    
    var row = form_field.up('.row');
    var display_field = row.down('.display')
    if (display_field != null) {
      form_field.hide();
      
      display_field.down('.value').update(form_field.value.escapeHTML());
      display_field.show();
    } else {
      form_field.disable();
    }
  }
  
};
LoginFunctions = {
  
  // ===================
  // = state functions =
  // ===================
  logged_in: function() {
    current_company = page.company || ''
    fastpass_company = Cookie.get("fastpass_company") || ''
    
    if(!current_company.blank() &&  !fastpass_company.blank()) {
      if(current_company != fastpass_company){ return false; }
    }

    
    if(Cookie.get('token_hash') && Cookie.get('token_issue_date')) {
      return true;
    } else {
      return false;
    }
  },
  // 
  // =========================
  // = Login/Logout Function =
  // =========================
  login: function(email, password) {
    this.form_login({'email':email, 'password':password});
  },
  
  form_login: function(params) {
    new Ajax.Request("\/login.js", {
      method: 'post',
      asynchronous:true,
      parameters: params,
      evalScripts:true
    });
  },
  
  login_and_reload: function(options) {
    this.login_and_do(null, function() { window.location.reload(); }, options);
    return false;
  },
  
  login_and_redirect: function(options) {
    this.login_and_do(null,
                      function() { window.location.href = this.login_redirect_url(); }.bind(this),
                      options);
    return false;
  },
  
  login_redirect_url: InlineLogin.login_redirect_url.bind(InlineLogin),
  
  login_and_do: function(position_anchor, callback, options) {
    options = options || {}
    var onLoad = options.onLoad;
    options.onLoad = function(login_mode) {
      $('overlay').show();
      var inline_login = $('inline_login');
      inline_login.hide();
      page.center(inline_login);
      inline_login.show();
      
      if (onLoad) { onLoad(login_mode) }
    }
    
    var onCancel = options.cancel_login;
    options.cancel_login = function() {
      $('overlay').hide();
      $('inline_login').hide();
      var the_content = $('inline_login').down('div.content');
      if (the_content) { the_content.update('') }
      
      if (onCancel) { onCancel() }
    }
    
    options.params = options.params || {}
    options.params.inline = 'true'
    
    InlineLogin.login_and_do(position_anchor, function() {
      $('inline_login').fade({
        delay: 0.4,
        duration: 0.4,
        afterFinish: function() {
          $('overlay').hide();
          if (callback) { callback() }
        }
      });
    }, options);
  },
  
  sign_up_and_do: function(position_anchor, callback, options) {
    options = options || {}
    var onLoad = options.onLoad;
    options.onLoad = function(login_mode) {
      $('overlay').show();
      var inline_login = $('inline_login');
      inline_login.hide();
      page.center(inline_login);
      inline_login.show();
      
      if (onLoad) { onLoad(login_mode) }
    }

    var onCancel = options.cancel_login;
    options.cancel_login = function() {
      $('overlay').hide();
      if (onCancel) { onCancel() }
    }
    
    options.params = options.params || {}
    options.params.inline = 'true'
    
    InlineLogin.sign_up_and_do(position_anchor, function() {
      $('inline_login').fade({
        delay: 0.4,
        duration: 0.4,
        afterFinish: function() {
          $('overlay').hide();
          if (callback) { callback() }
        }
      });
    }, options);
  },
  
  // ====================
  // = Cookie Functions =
  // ====================
  
  set_login_cookies: function(text) {
    json = eval('(' + text + ')');
    $H(json).each(function(keyvalue) {
      Cookie.set(keyvalue[0], keyvalue[1].value, keyvalue[1].days_to_expire);
    });
  },
  
  // =====================
  // = Event Dispatchers =
  // =====================
  on_login: function() {
    page.notify('login');
  }
};
Notifiers = {
	notify: function(operation, options) {		
		this.ensure_notifiers(operation);
		if(!options) { options = $H({}); }
		
		this.notifiers[operation].each(function(callback) { 
			try {
        callback(options);
      } catch(e) {log_exception(e)}
      
		});	
	},
	
	watch: function(operation, callback) {
		this.ensure_notifiers(operation);
		this.notifiers[operation].push(callback);
		return callback;
	},
	
	unwatch:function(operation, callback) {
		this.ensure_notifiers(operation);
		this.notifiers[operation] = this.notifiers[operation].reject(function(cb){ return cb == callback;});
		return callback;
	},
	
	ensure_notifiers: function() {
		if(!this.notifiers){ this.notifiers = $H(); }
		$A(arguments).each(function(e) { 
			if(!this.notifiers[e]){this.notifiers[e] = $A();}
		}.bind(this));
		
	}
}

Page = Class.create();
Page.prototype = {};
Object.extend(Page.prototype, LoginFunctions)
Object.extend(Page.prototype, Notifiers)

Object.extend(Page.prototype, {
  initialize: function() {
    this.scroll_interval = null;
    this.msg_el;
  },
  
  dismiss_feature_msg: function(value, container) {
    var feature_cookie = Cookie.get('feature_msg');
    var get_msgs = feature_cookie == null ? [] : feature_cookie.split("|");
    get_msgs.push(value);
    set_msgs = get_msgs.join("|");
    Cookie.set('feature_msg', set_msgs, 100000);
    
    if(!container) {
      container = 'feature_msg';
    }
    
    new Effect.BlindUp(container, {duration: 0.4});
  },
  
  scrollTop: function() {
    return window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },
  
  show_mini_modal: function() {
    var ov = $('overlay');
    $('mini_modal').style.top = this.scrollTop()+"px"
    if(!ov.visible()) {
      $('mini_modal').show();
      $('mini_modal_content').update("");
      $('mini_modal_loader').show();
      $('overlay_screen').show();
      ov.style.height = document.documentElement.scrollHeight-70+"px";
      ov.show();
    }
  },
  
  populate_mini_modal: function(content) {
    $("mini_modal_content").update(content);
    $('mini_modal_loader').hide();
  },
  
  hide_overlay: function() {
    var ov = $('overlay');
    ov.immediateDescendants().invoke("hide");
    ov.hide();
  },
  
  show_overlay: function() {
    $('overlay').show();
  },
  
  center_overlay: function() {
    el = $('overlay').immediateDescendants().last();
    page.center(el);
  },

	fixed_message: function(message, style) {
    this.msg_el = $$("div.main_msg").first(); 
    this.msg_el.removeClassName("good"); 
    this.msg_el.removeClassName("bad"); 
    this.msg_el.addClassName(style);
    this.show_notification(message);
  },

  show_notification: function(message) {
    Element.scrollTo(this.msg_el); 
    if (message) {  
      if(this.msg_el.down(".content")) { 
        this.msg_el.down(".content").update(message);  
      } else { 
        this.msg_el.update("<div class=\"content\">"+message+"</div>");  
      } 
    } 
    this.msg_el.show();
  },

  hide_notification: function(clear) {
    this.msg_el.hide();
  },

  auto_hide_this: function(element, hide_element, callback) {
    if (hide_element == "undefined") {
      hide_element = element;
    }
    $(element).autoHide(hide_element, callback);
  },
  
  center: function(element) {
    element_middle = ($(element).getDimensions().height / 2) * 1;
    viewport_middle =(document.viewport.getHeight() * 1) / 2;
    scroll_offset = document.viewport.getScrollOffsets()[1];
    
    top_px = scroll_offset + viewport_middle - element_middle;
    $(element).style.top = top_px + "px";
  },

  adjust_scroll_position: function(element, overshoot, callback) {
    element = $(element);
    scroll_top = page.scrollTop();
    overshoot = overshoot ? overshoot : 0;
    if (this.scroll_interval != null) clearInterval(this.scroll_interval);
    document_height = document.documentElement.clientHeight;
    screen_bottom = scroll_top+document_height;
    new_position = Position.cumulativeOffset(element)[1]+Element.getDimensions(element).height;
    
    end_scroll_position = new_position-document_height+overshoot;

    if(new_position > screen_bottom) {
      this.scroll_interval = setInterval(function() {
        if(scroll_top < end_scroll_position) {
          scroll_top += Math.ceil((end_scroll_position-page.scrollTop())/10)
          window.scrollTo(0, scroll_top);
        } else {
          if (callback != undefined) {
            callback()
          }
          clearInterval(this.scroll_interval);
        }
      }.bind(this), 10);
    }
  },
  
  safe_redirect:function(url) {
    window.location.href = url;
    return false;
  },
  
  validate_form: function(form) {
    var form = $(form);
    var required = form.select(".required");
    var msg = form.down(".msg");
    var spinner = $(form).down('.spinner');
    for(var r=0; r<required.length; r++) {
      var required_el = required[r].down("input") || required[r].down("textarea");
      if($F(required_el) == "") {
        if(!page.on_screen(form)) Element.scrollTo(form);
        required[r].addClassName("highlight");
        str = required[r].down("label").innerHTML;
        if (msg) {
          msg.update("<strong>Zing!</strong> Sorry about that. <span>" + str.sub(":", "") + "</span> is required to complete this form.");
          if(!msg.visible()) Effect.Appear(msg, {duration: 0.5});
        }
        required_el.focus();
        if(spinner) {
          page.async(function() { SpinnerButton.reset(spinner); });
        }
        return false; break;
      } else {
        required[r].removeClassName("highlight");
      }
    }
    msg.hide();
    return true;
  },
  
  focus_blank_input: function(form_el) {
    force_break = false;
    $(form_el).select('.text').each(function(el) {
      if($F(el) == "" && !force_break) {
        el.focus(); 
        force_break = true;
      }
    });
  },
  
  on_screen: function(el) {
    return (Position.cumulativeOffset(el)[1] > document.documentElement.scrollTop)
  },
  
  // ===================
  // = Company & Product History =
  // ===================
  
  history_json: function(c_history) {
    items = $A(c_history).map(function(history_item){
      return "[\"" + history_item[0] + "\",\"" + history_item[1] + "\"]"
    });
    return "[" + items.join(',') + "]"
  },
  
  get_history: function(cookie_id) {
    try {
      val = eval("(" + Cookie.get(cookie_id)+ ")");
    } catch(e) {
      val = [];
    }
    
    if(val) { return val; }
    else { return []; }
  },
  
  update_history: function(domain, label, cookie_id) {
    c_history = this.get_history(cookie_id);
    domain = domain.toString();
    set_value = [domain, label];
    if(c_history != null) {
      exists = false; index = null;
      for(i=0; i<c_history.length; i++) {
        if(c_history[i][0] == domain) {
          exists = true; index = i;
          break;
        }
      }
      if(!exists) {
        if(c_history.length == 5) c_history.pop();
        c_history.unshift(set_value);
      } else {
        c_history.splice(index, 1);
        c_history.unshift(set_value);
      }
    } else {
      c_history.unshift(set_value);
    }
    Cookie.set(cookie_id, this.history_json(c_history), 3560);
  },
  
  render_history: function() {
    // Render recently viewed companies and products
    this.update_history_html($('c_history_list'), this.get_history("company_history"), 'companies'); // Companies
    this.update_history_html($('p_history_list'), this.get_history("product_history"), 'products'); // Products
  },
  
  update_history_html: function(el, h, l) {
    if ($A(h).any()) {
      var string = "<dt>Recently viewed<br/>"+l+"</dt>";
      for(i=0; i<h.length; i++) {
        if(i==0) {
          klass = " class=\"first\"";
        } else {
          klass = "";
        }
        string += "<dd"+klass+"><a href=\""+ h[i][0] + "\"><span>"+ h[i][1] +"</span></a></dd>";
      }
      el.update(string)
    } else {
      el.hide();
    }
  },

  
  // ===================
  // = Login Trackback =
  // ===================
  
  dont_set_login_trackback: function() {
    this.set_login_trackback = function() {}; //just unset the function
  },
  
  set_login_trackback: protect(function() {
    Cookie.erase('login_trackback');
    Cookie.set('login_trackback', location.href);
  }),
  
  login_trackback: function() {
    return Cookie.get('login_trackback')
  },
  
  async:function(callback) {
    setTimeout(protect(callback), 10);
  },
  
  post_tracker: function(url) {
    try {
      var pageTracker = _gat._getTracker("UA-2005202-1");
      pageTracker._trackPageview(url);      
    } catch(e) { }
  },
  adwords_conversion: function() {
    $('adwords_target').update("\n  <script language=\"JavaScript\" type=\"text\/javascript\">\n  <!--\n  var google_conversion_id = 1050519912;\n  var google_conversion_language = \"en_US\"; \n  var google_conversion_format = \"1\";\n  var google_conversion_color = \"FFFFFF\";\n  if (1) {\n    var google_conversion_value = 1;\n  }\n  var google_conversion_label = \"signup\";\n  \/\/--> \n  <\/script>\n  <script language=\"JavaScript\"  type=\"text\/javascript\" src=\"http:\/\/www.googleadservices.com\/pagead\/conversion.js \"> \n  <\/script>\n  <noscript>\n    <img height=1 width=1 border=0 src=\" http:\/\/www.googleadservices.com\/pagead\/conversion\/1050519912\/imp.gif?value=1&amp;label=signup&amp;script=0 \">\n  <\/noscript>\n")
  },
  
  searcher_setup: function(searcher, container_el, find_label, label) {
    $('header_topic_search').hide(); $('header_product_search').hide(); $('header_company_search').hide();
    var c = $(container_el).show(); 
    c.down('div.menu').hide();
    $('search_type_txt').value = find_label;
    var search_field = c.down('input');
    search_field.prompted_text = label;
    search_field.value = label;
    search_field.observe("keyup", function() {
      searcher.search($F(search_field), search_field, 'header')
    });
  },

  // ===================
  // == JS Templating Methods ==
  // ===================

  user_console: function() {
    if(page.logged_in()) {
      user_console_inside = '<a href="/me">Your Dashboard &amp; Account</a> | <a href="/logout">Sign out</a>';
    } else {
      user_console_inside = '<a href="/logins/new?company=' + page.company + '" onclick="return page.login_and_reload();">Log in</a> or <a href="/people/new?company=' + page.company + '" onclick="return page.login_and_reload();">Sign up</a>';
    }
    user_console_html = '<span id="gsfn_user_console">' + user_console_inside + '</span>';
    document.write(user_console_html);
  }
});

Object.extend(Page, {
  // ===================
  // == Tagging Stuff ==
  // ===================
  
  split_tags: function(list) {
    tag_names = [];
    // first, pull out the quoted tags
    list = list.gsub(/\"(.*?)\"\s*/, function(m) { tag_names.push(m[1]); });
    // then, get whatever's left
    all_tags = tag_names.concat(list.split(/,/));
    // strip whitespace from the names
    clean_tags = all_tags.invoke('strip');
    // reject empty tags
    return clean_tags.reject(function(name) { return name == ''; });
  }
});

page = new Page();

var Cookie = {
  set: function(name, value, daysToExpire) {
    var expire = '';
    if (daysToExpire != undefined) {
      var d = new Date();
      d.setTime(d.getTime() + (86400000 * parseFloat(daysToExpire)));
      expire = '; expires=' + d.toGMTString();
    }
    return (document.cookie = escape(name) + '=' + escape(value || '') + expire + 
            "; domain=" + escape(this.domain()) +
            "; path=/");
  },
  domain: function() {
    var hostname = window.location.hostname;
    var components = hostname.split('.');
    if (components.length >= 2) {
      components = components.reverse();
      return '.' + components[1] + '.' + components[0];
    } else {
      return hostname;
    }
  },
  get: function(name) {
    var cookie = document.cookie.match(new RegExp('(^|;)\\s*' + escape(name) + '=([^;\\s]*)'));
    return (cookie ? unescape(cookie[2]) : null);
  },
  erase: function(name) {
    var cookie = Cookie.get(name) || true;
    Cookie.set(name, '', -1);
    return cookie;
  },
  accept: function() {
    if (typeof navigator.cookieEnabled == 'boolean') {
      return navigator.cookieEnabled;
    }
    Cookie.set('_test', '1');
    return (Cookie.erase('_test') === '1');
  }
};

Util = {
	anchor: function(href) {
		return href.split('#',2)[1];
	}
}

var Tag = Class.create();

Object.extend(Tag, {
  login_prompt_template: 'add a tag',
  processing_template: "<li class=\"adding_tag\">\n  <span>Adding...<\/span>\n<\/li>",
  
  tag_template: "<li id=\"#{this.dom_id}\">\n  <a href=\"#{this.href}\" class=\"tag\">#{this.name}<\/a>\n  #{this.delete_link}\n<\/li>\n",
  delete_tag_template: "<a class=\"delete_tag\" href=\"#\" onclick=\"if (confirm('Remove the tag &quot;#{this.name}&quot;?')) {Tag.remove(this, '#{this.id}');}; return false;\"><img alt=\"[x]\" src=\"http:\/\/2.static.getsatisfaction.com\/images\/x.gif\" title=\"Remove this tag\" \/><\/a>",
  
  
  add_btn: function(btn) {
    page.login_and_do(btn, Tag.start_tagging.bind(Tag, btn), { prompt: Tag.login_prompt_template })
  },
  
  start_tagging: function(btn) {
    btn.hide();
    var form = Tag.form_for(btn);
    form.show();
    Tag.entry_field_for(form).focus();
  },
  
  add: function(form) {
    var entry_field = Tag.entry_field_for(form);
    var entry = $F(entry_field);
    if (entry.blank()) {
      Tag.reset_entry_field(form);
      return;
    }
    
    if (Tag.header_for(form).hasClassName('company')) {
      new Insertion.Top(Tag.list_for(form), Tag.processing_template);
    } else {
      new Insertion.Bottom(Tag.list_for(form), Tag.processing_template);
    }
    
    new Ajax.Request(form.readAttribute('action'), {
      parameters: form.serialize(true),
      onCreate: function() {
        entry_field.clear();
      },
      onSuccess: function(request) {
        var tag_data = eval('(' + request.responseText + ')');
        Tag.reload_list(tag_data, form);
        entry_field.focus();
        page.post_tracker('/tracking/tag/create');
      },
      onFailure: function(request) {
        if (adding = Tag.list_for(form).down('li.adding_tag')) { adding.remove(); }
        alert('Error adding tags :(');
        entry_field.value = entry;
      }
    });
  },
  
  reload_list: function(tag_data, context) {
    if (tag_data) {
      var tags = $A(tag_data).collect(function(tag) {
        tag.delete_link = tag.deletable ? Tag.tag_deleter_for(tag.id, tag.name) : ''
        return new EvalTemplate(Tag.tag_template).evaluate(tag);
      });
      Tag.list_for(context).update(tags.join('\n'));
    }
  },
  
  remove: function(link, tag_id) {
    var form = Tag.form_for(link);
    new Ajax.Request(form.readAttribute('action') + '/remove', {
      method: 'delete',
      parameters: {id: tag_id},
      onSuccess: function(request) {
        if (request.responseText.blank()) {
          Element.remove(Tag.list_item_for(link));
        } else {
          var tag_data = eval('(' + request.responseText + ')');
          Tag.reload_list(tag_data, form);
        }
        page.post_tracker('/tracking/tag/destroy');
      },
      onFailure: function(request) { alert('Error removing tag :(') }
    });
  },
  
  reset_entry_field: function(form) {
    var field = Tag.entry_field_for(form);
    field.clear();
    if (field.prompter) { field.prompter.enabled = true; }
    field.blur();
  },
  
  enable_deletion: function(tags) {
    tags.async_each(function(tag) {
      if (!$(tag.dom_id).down('a.delete_tag') && tag.deletable)
        new Insertion.Bottom(tag.dom_id, Tag.tag_deleter_for(tag.id, $(tag.dom_id).down('a.tag').innerHTML));
    });
  },
  
  container_for: function(interior_el) {
    return interior_el.up('.sidebar_tag_list');
  },
  
  form_for: function(interior_el) {
    return Tag.container_for(interior_el).down('form');
  },
  
  list_for: function(interior_el) {
    return Tag.container_for(interior_el).down('.tag_list');
  },
  
  header_for: function(interior_el) {
    return Tag.container_for(interior_el).down('h2')
  },
  
  list_item_for: function(interior_el) {
    return interior_el.up('li');
  },
  
  entry_field_for: function(form)  {
    return form.down('input.text');
  },
  
  tag_deleter_for: function(tag_id, tag_name) {
    return new EvalTemplate(Tag.delete_tag_template).evaluate({id: tag_id, name: tag_name.gsub("'", "\\'").gsub("\"", "")});
  }
});

Tag.prototype = {
  initialize: function() {}
}

  
Star = Class.create();
Object.extend(Star, {
  login_success_template: "\n  Thanks!\n",
  
  login_prompt_template: 'mark this reply as useful',
  
  dashboard_promotion_phrases: {"idea":"is one of the best points","question":"answers the question","problem":"solves the problem"},

  dashboard_click: function(link, identifier, item_id) {
    return new Star(link, identifier, item_id).dashboard_click();
  }
    
});

Star.prototype = {
  initialize: function(link, identifier, item_id) {
    this.identifier = identifier;
    this.item_id    = item_id;
    this.link       = link;
    this.affected_stars = $$('#content .' + this.identifier);
  },

  dashboard_click: function() {
    if (page.logged_in()) {
      this.apply_dashboard_star();
	  } else {
	    page.watch('user_data_loaded', Star.dashboard_click.bind(Star, this.link, this.identifier, this.item_id));
			page.login_and_do(this.link, Prototype.emptyFunction, { // this callback is an empty function because of the page.watch above
			  prompt: Star.login_prompt_template, 
			  success: Star.login_success_template
			});
	  }
	},
	
  apply_dashboard_star: function() {
    new Ajax.Request("\/stars", {
      evalScripts: true,
      parameters: {reply_id : this.item_id},
      onSuccess: function(request) {
        var topic_type = this.link.up('li').down('img').readAttribute('alt');
        this.affected_stars.invoke('update', "You say this " + Star.dashboard_promotion_phrases[topic_type]);
      }.bind(this)
    });
  }
};



Flag = Class.create();
Object.extend(Flag, {
  click: function(flag_el, flagged_item_type, flagged_item_id) {
    flag_el = flag_el.hasClassName('flag') ? flag_el : flag_el.up('.flag');
    if(!flag_el || flag_el.hasClassName("flag_disabled")){ return false; }
    return new Flag(flag_el, flagged_item_type, flagged_item_id).click();
  },
  finish_flag: function(el) {
    this.set_flagged($(el).down(".flag"))
    $("mini_modal_content").update("<h3 style=\"text-align: center; padding-top: 60px;\">Thanks!</h3>");
    setTimeout(function() {
      page.hide_overlay();
    }, 2000);
  },
  set_flagged: function(el) {
  }
});

Flag.prototype = {
  initialize: function(flag_el, flagged_item_type, flagged_item_id) {
    this.element = flag_el;
    this.flagged_item_type = flagged_item_type;
    this.flagged_item_id = flagged_item_id;
  },
  
  click: function() {
    if (!this.is_flagged()) {
      page.login_and_do(this.element, this.set_flag.bind(this), {
        prompt: 'flag this item'
      });
    }
  },
  
  set_flag: function() {
    new Ajax.Request("\/flags", {
      method: 'post',
      parameters: {flagged_item_type: this.flagged_item_type, flagged_item_id: this.flagged_item_id},
      onSuccess: function(request) { this.activate_form(request) }.bind(this)
    });
  },
  
  activate_form: function(request) {
    this.element.update('Under review!');
    this.element.addClassName('flag_disabled');
    page.show_mini_modal();
    page.populate_mini_modal(request.responseText);
  },
  
  is_flagged: function() {
    this.element.hasClassName('flag_disabled');
  }
};
Searcher = Class.create();
Object.extend(Searcher, {
  search:function(query, input_field, search_type) {
    this.input_field = input_field;
    this.query = query;
    if(this.input_field.up('.combo')) { this.combo = this.input_field.up('.combo').combo; }
    if(query.blank()) {
      if(this.search_timeout){ clearTimeout(this.search_timeout)};
      this.search_form(input_field).delayed_query = null;
      this.results(input_field).hide();
      this.searching_indicator(input_field).hide();
    } else if(this.search_timeout && query == this.search_form(input_field).delayed_query) {
      return;
    } else {
      if(this.search_timeout){ clearTimeout(this.search_timeout)};
      this.search_form(input_field).delayed_query = query
      this.searching_indicator(input_field).show();
      
      this.search_timeout = setTimeout(function(){
        new Ajax.Request(this.search_url, {
          asynchronous:true, 
          method:'get',
          parameters:{'query': query, 'search_type': search_type},
          evalScripts:true,
          onComplete: function(){
            this.searching_indicator(input_field).hide();
          }.bind(this),
          onSuccess: function(request) {
            if(this.search_form(input_field).delayed_query != query) {return;}
            this.results(input_field).update(request.responseText);
            this.results(input_field).show();
            if(this.combo) {this.combo.formatResults(this.results(input_field));}
          }.bind(this),
          on404: function(request) {
            this.result_404();
            this.results(input_field).show();
          }.bind(this)
        });
      }.bind(this),1000)
    }
  },
  
  result_404: function() {
    if(this.search_type == 'companies') {
      this.results(this.input_field).update("<dl class=\"no_results\"><dt>We couldn't find &quot;"+this.query.stripTags()+"&quot;</dt><dd><a href=\"/companies/new?name="+this.query.stripTags()+"\" class=\"on\"><span>Add it to Get Satisfaction!</span></a></dd></dl>");
    } else if(this.search_type == 'products') {
      this.results(this.input_field).update("<dl class=\"no_results\"><dt>No products found matching: \""+this.query.stripTags()+"\"</dt><dl>");
    }
    this.results(this.input_field).show();
  },
  
  activate_search: function(input_field) {
    page.auto_hide_this(this.search_form(input_field), this.results(input_field));
  },
  
  prepare_search: function(input_field) {
    $(input_field).setAttribute("autocomplete", "off");
  },
  
  search_form: function(input_field) {
    return $(input_field).up('form');
  },
  
  results: function(input_field) {
    return this.search_form(input_field).down('.search_results');
  },
  
  searching_indicator: function(input_field) {
    return this.search_form(input_field).down('.searching');
  }
});


Products = Object.clone(Searcher);
Object.extend(Products, {
  search_type:'products',
  search_url:"\/products\/search"
});


Companies = Object.clone(Searcher);
Object.extend(Companies, {
  search_type:'companies',
  search_url:"\/companies\/search"
});

MiniProfile = Class.create();
MiniProfile.prototype = {
  initialize:function(profile_link, user_id) {
    this.timer = null;
    this.options = null;
    this.person_id = user_id;
    this.profile_overlay = $('mini_profile');
    this.profile_overlay.hide();
    this.profile_link = $(profile_link);
    this.profile_link.onmouseover = this.show_profile.bind(this);
    this.profile_link.onmouseout = this.hide_profile.bind(this);
    this.show_profile();
  },

  show_profile:function() {
    this.profile_overlay.onmouseover = function() {
      clearTimeout(this.timer);
      this.profile_overlay.show();
    }.bind(this);
    this.profile_overlay.onmouseout = this.hide_profile.bind(this);
    clearTimeout(this.timer);
    this.profile_overlay.down(".icon").setAttribute('src', '/images/sprite_screen.png');
    if (this.profile_link.hasClassName('employee')) {
      this.profile_overlay.addClassName('employee');
    } else {
      this.profile_overlay.removeClassName('employee');
    }
    if (this.profile_link.hasClassName('champion')) {
      this.profile_overlay.addClassName('champion');
    } else {
      this.profile_overlay.removeClassName('champion');
    }
    if(this.options) {
      this.apply_loaded_data();
    } else {
      this.load_delay = setTimeout(function() {
        this.show_after_load = true;
        this.show_progress_indicator();
        this.load_data();
      }.bind(this), 200)
    }
    this.timer = setTimeout(function() {
      this.show_overlay();
    }.bind(this), 400);
    return false;
  },
  
  apply_loaded_data: function() {
    this.profile_overlay.down(".icon").setAttribute('src', this.options.avatar_path);
    this.profile_overlay.down(".name").update(this.options.name);
    this.profile_overlay.down(".url").update(this.options.personal_url);
    if(this.options.tagline) { 
      this.profile_overlay.down(".tagline").update("\""+this.options.tagline+"\"");
    } else {
      this.profile_overlay.down(".tagline").update("");
    }    
    
    if(this.options.premium) { 
      this.profile_overlay.down(".premium").update("premium");
    } else {
      this.profile_overlay.down(".premium").update("");
    }
    
    this.profile_overlay.down(".private_fields").update(this.options.private_fields || '');
    this.profile_overlay.down(".identities").update(this.options.identities || '');
    
    this.profile_overlay.down(".created_at").update("Joined " + this.options.member_since);
    this.profile_overlay.down(".location").update(this.options.location);
    this.profile_overlay.down(".topics").update('<strong>'+this.options.topics+'</strong> ' + new String("Topic").pluralize(this.options.topics));
    this.profile_overlay.down(".replies").update('<strong>'+this.options.replies+'</strong> ' + new String("Reply").pluralize(this.options.replies));
    this.hide_progress_indicator();
  },
  
  show_progress_indicator: function() {
    $('mini_progress_indicator').show();
    $('mini_profile_data').hide();
  },

  hide_progress_indicator: function() {
    $('mini_profile_data').show();
    $('mini_progress_indicator').hide();
  },

  load_data: function() {
    new Ajax.Request('/people/' + this.person_id + '/mini_profile', {
      method: 'get',
      asynchronous:true,
      evalScripts:true,
      onSuccess: function(request) {
        this.options = eval('(' + request.responseText + ')');
        this.finish_loading_data();
      }.bind(this)
    });
  },
  
  finish_loading_data: function() {
    if(this.show_after_load) {
      this.apply_loaded_data()
    }
  },
  
  hide_profile:function() {
    clearTimeout(this.load_delay);
    clearTimeout(this.timer);
    this.timer = setTimeout(function() {
      this.show_after_load = false;
      this.profile_overlay.hide();
    }.bind(this), 400)
    return false;
  },
  
  show_overlay:function() {
    this.profile_overlay.dockTo(this.profile_link, {target_point: 'tr'});
  }
}

function mp(elem, param) {
  return new MiniProfile(elem, param);
}
EmotionPicker = Class.create();

Object.extend(EmotionPicker, {
  get_picker: function(link) {
    tagger = $(link);
    return this.ensure_for(tagger.hasClassName('emotitagger') ? tagger : tagger.up('.emotitagger'));
  },
  
  find_in: function(el) {
    tagger = $(el);    
    return this.ensure_for(tagger.hasClassName('emotitagger') ? tagger : tagger.down('.emotitagger'));
  },
  
  cancel_emotitagging: function(link) {
    this.get_picker(link).cancel_emotitagging();
  },
  
  face_click: function(link, face) {
    this.get_picker(link).face_click(face);
  },
  
  ensure_for: function(container) {
    container = $(container);
    return container.emotion_picker ? container.emotion_picker : new EmotionPicker(container);
  }
});

EmotionPicker.prototype = {
  initialize: function(container) {
    this.container = $(container);
    this.container.emotion_picker = this;
    
    this.face_field = this.container.down(".emotitagger_face");
    this.intensity_field = this.container.down(".emotitagger_intensity");
    this.feeling_field = this.container.down(".emotitagger_feeling");
    this.arrow = this.container.down(".arrow");
    this.face_list = this.container.down(".picker_list");
    this.face_links = this.face_list.select("a");
    this.feeling_area = this.container.down(".feeling_entry");
    this.punctuation_area = this.container.down(".punctuation");
    
    this.example_feelings = this.container.select(".example_feelings");
    
    this.previous_face = null;
  },
  
  // ========================================
  // = API functions, you should use these! =
  // ========================================
  
  face_click: function(face) {
    this.set_values(face);
    return false;
  },
  
  set_feeling: function(face, feeling) {
    this.face_field.value = face;
    this.feeling_field.value = feeling;
  },
  
  start_emotitagging: function(face) {
    this.arrow.show();
    this.update_picker_class(face);
    this.example_feelings.each(function(f) { f.hasClassName(face) ? f.show() : f.hide() });
    this.set_punctuation();
    if (!this.feeling_area.visible()) { this.feeling_area.show(); }
  },

  cancel_emotitagging: function() {
    this.update_picker_class(null);
    this.face_links.invoke('removeClassName', 'on');
    if (this.feeling_area.visible()) { 
      this.feeling_area.hide();
      $A([this.face_field, this.intensity_field, this.feeling_field]).invoke('clear');
    }
    this.arrow.hide();
    this.punctuation_area.hide();
    this.example_feelings.invoke('hide');
    this.previous_feeling = null;
    this.previous_face = null;
    this.container.emotion_picker = null;
  },
  
  // ===========================================
  // = My Privates are below, don't touch them =
  // ===========================================
  
  set_values: function(face) {
    this.previous_face == face ? this.increment_intensity() : this.reset_intensity();
    this.set_face(face);
    this.set_punctuation();
  },
  
  set_face: function(face) {
    if (!face) { face = ''; }
    this.update_picker_class(face);
    this.face_field.value = face;
    this.previous_face = face;
    this.face_links.each(function(el) {
      el.removeClassName("on");
    });
    if(face.blank()) {
      if (this.feeling_area.visible()) { this.feeling_area.hide(); }
    } else {
      link = this.container.down('a.' + face);
      link.addClassName("on")
      this.arrow.show();
      this.example_feelings.each(function(f) { f.hasClassName(face) ? f.show() : f.hide() });
      if (!this.feeling_area.visible()) { this.feeling_area.show(); }
    }
  },
  
  set_punctuation: function() {
    this.punctuation_area.update(this.punctuation());
  },
  
  update_picker_class: function(new_class) {
    // out with the old
    if(this.face_field.value != "") this.face_list.removeClassName("picker_"+this.face_field.value);
    // in with the new
    if(new_class != null) this.face_list.addClassName("picker_"+new_class);
  },
  
  increment_intensity: function() {
    if (this.intensity() < 4) { this.intensity_field.value = this.intensity().succ() };
  },
  
  reset_intensity: function() {
    this.intensity_field.value = 1;
    this.previous_feeling = null;
  },
    
  punctuation: function() {
    if(this.intensity() == 1) {
      this.punctuation_area.hide();
      return '';
    } else {
      this.punctuation_area.show();
      return '!'.times(this.intensity() - 1);
    }
  },
  
  intensity: function() {
    n = Number(this.intensity_field.getValue());
    return (n < 1) ? 1 : Math.min(n, 4);
  },
  
  selected_face: function() {
    var face = this.face_field.getValue();
    return face == "" ? null : this.container.down("." + face);
  }
};



Page.ProductNames = Class.create();
Page.ProductNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.getValue().split(/,\s*/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(productNames) {
    this.element.value = productNames;
  },

  add: function(productNameToAdd) {
    if (this.include(productNameToAdd)) return;
    this.set($A(this).concat(productNameToAdd).join(', '));
  },

  remove: function(productNameToRemove) {
    if (!this.include(productNameToRemove)) return;
    this.set($A(this).without(productNameToRemove).join(', '));
  },

  toString: function() {
    return $A(this).join(', ');
  }
};
Object.extend(Page.ProductNames.prototype, Enumerable);

Object.extend(Page, {  
  sidebar_product_template: "\n\n<li>\n  <a class=\"toggle_img\" href=\"#\" onclick=\"ProductPicker.add_product(&quot;#{this.name}&quot;, this); return false;\" title=\"Add product\">\n    <div class=\"product_photo\"><img src=\"#{this.thumbnail_path}\" alt=\"#{this.name}\" \/><\/div>\n    <span class=\"product_label\">#{this.name}<\/span>\n  <\/a>\n<\/li>\n",
  new_topic_product_template: "\n\n<li>\n  <a class=\"toggle_img\" href=\"#\" onclick=\"ProductPicker.add_product(&quot;#{this.name}&quot;, this); return false;\" title=\"Add product\">\n    <div class=\"product_photo\"><img src=\"#{this.thumbnail_path}\" alt=\"#{this.name}\" \/><\/div>\n    <span class=\"product_label\">#{this.name}<\/span>\n  <\/a>\n<\/li>\n",
  new_topic_added_product_template: "\n<li id=\"#{this.dom_id}\" class=\"new_topic_product picked\">  \n  <div class=\"followable\">\n    <a href=\"#\" onmouseover=\"$(this).up('.picker_container').addClassName('remove')\" onmouseout=\"$(this).up('.picker_container').className = 'picker_container'\" onclick=\"$(this).up('.picker_container').className = 'picker_container'; ProductPicker.remove_product('#{this.name}', this); return false;\"  class=\"img_link\" title=\"&laquo; Remove #{this.name}\">\n      <img src=\"#{this.thumbnail_path}\" alt=\"#{this.name}\" \/>\n    <\/a>\n  <\/div>\n  <div class=\"item_details product_label\"><a href=\"#\" class=\"name\">#{this.name}<\/a><\/div>\n<\/li>\n",
  new_topic_empty_template: "<li><div class=\"followable empty\"><img src=\"\/images\/followable_empty.png\" alt=\"empty\"\/><\/div><\/li>",
  new_topic_new_product_template: "<li class=\"new_topic_product picked\">  \n  <div class=\"followable\">\n    <a href=\"#\" onmouseover=\"$(this).up('.picker_container').addClassName('remove')\" onmouseout=\"$(this).up('.picker_container').className = 'picker_container'\" onclick=\"$(this).up('.picker_container').className = 'picker_container'; ProductPicker.remove_product(#{this.name.inspect()}, this); return false;\"  class=\"img_link\" title=\"&laquo; Remove #{this.name} %>\">\n      <img src=\"\/images\/product_default_standard.png\" alt=\"#{this.name}\" \/>\n    <\/a>\n  <\/div>\n  <div class=\"item_details product_label\"><span class=\"name\">#{this.name}<\/span><\/div>\n<\/li>\n",
  login_prompt_template: 'add products and services',
  no_product_prompt_template: "<li class=\"note\">\n  Sorry, that product doesn't exist in our system yet.\n<\/li>",
  add_product_prompt_template: "<li class=\"note\">\n  Start by typing a product or service name and we will look it up!\n<\/li>",
  
  
  exact_match: function(name, product_name) {
    escaped_name = String.interpret(name).strip().gsub(/[^a-zA-Z0-9_\s]/, '\\S').gsub(/\s/, '\\s*')
    try {
      regex = new RegExp('^' + escaped_name + '$', 'i');
      return regex.test(product_name);
    } catch(e) {
      return false;
    }
  }
});

ProductPicker = Class.create();
Object.extend(ProductPicker, {
  attach: function(container_el, dispatcher, filter_template) {
    return new ProductPicker(container_el, dispatcher, filter_template);
  },
  
  add_product: function(name, link) { this.get_picker(link).add_product_to_topic(name); },
  remove_product: function(name, link) { this.get_picker(link).remove_product_from_topic(name, link); },
  add_from_input: function(link) { this.get_picker(link).add_from_input(); },
  
  get_picker: function(link) {
    return $(link).up('.picker_container').product_picker;
  },
  
  create_for_sidebar: function(link) {
    page.login_and_do(link, 
      function() {
        link.hide();
        $('sidebar_product_input').setAttribute("autocomplete", "off");
        picker = ProductPicker.ensure_for(link.up('.picker_container'))
        
        link.next('.inline_form').show();
        picker.product_input.focus();
      }, {
      prompt: Page.login_prompt_template
    });
  },
  
  ensure_for: function(container) {
    container = $(container);
    if(container.product_picker){ return container.product_picker;}
    dispatcher = new SingleProductDispatcher();
    picker = ProductPicker.attach(container, dispatcher, Page.sidebar_product_template);
    
    if(page.logged_in()) {
      picker.load_product_data();
    } else {
      page.watch('login', function(){ picker.load_product_data(); }.bind(this))
    }
    
    return picker;
  }
});

Object.extend(ProductPicker.prototype, {
  initialize: function(container_el, dispatcher, filter_template) {
    this.container = $(container_el);
    this.container.product_picker = this;
    this.submittable = true;
    this.available_list = this.container.down('.available_products');
    this.available_list.hide();
    this.product_input = this.container.down('.filter_products');
    this.added_products = this.container.down(".added_products");
    this.product_input.onfocus = this.focused.bind(this);
    this.product_input.onblur = function() { this.submittable = true; }.bind(this)
    this.dispatcher = dispatcher;
    this.dispatcher.picker = this;
    this.filter_template = filter_template;
    this.observe(this.product_input);
  },

  // ========================================
  // = API functions, you should use these! =
  // ========================================
  
  add_from_input: function(name_overide) {
    name_to_add = name_overide ? name_overide : $F(this.product_input)
    // Test if products exists
    if(!this.test_product_exists(name_to_add)) {
      alert("Please add an existing product");
    } else {      
      this.add_product_to_topic(name_to_add);
    }
  },
  
  assigned_products: function() { return $A(this.dispatcher.get_assigned_products()); },
  
  test_product_exists: function(name) { !this.get_product(name) == null },
  
  remove_product_from_topic: function(product_name, link) {
    if(product_name != "") {
      success = function() {
        link.up('li').remove();
        // Add placeholders for a new topic
        if(this.assigned_products().length < 4 && $("new_topic_add_products")) {
          empty_li = Page.new_topic_empty_template;
          new Insertion.Bottom(this.added_products, empty_li);
        }
      }.bind(this);
      failure = function() {}
    
      this.dispatcher.remove_product(product_name, success, failure);    
      this.filter_products();
    }
  },
  
  add_product_to_topic: function(product_name) {
    if(product_name != "" && !this.assigned_products().include(product_name)) {
      success = function() {
        Form.Element.focus(this.product_input).clear();
      }.bind(this);
      failure = function() {};
      this.dispatcher.add_product(product_name, success, failure);
      this.filter_products();
    }
  },
  
  clear_products: function() {
    success = function() {};
    failure = function() {};
    
    this.assigned_products().each(function(name) {
      this.dispatcher.remove_product(name, success, failure);
    });
    this.filter_products();
  },
  
  // ===========================================
  // = My Privates are below, don't touch them =
  // ===========================================
  
  filter_products: function() {
    name = $F(this.product_input).strip();
    matching_products = this.get_unadded_products_for_name(name);
    if(matching_products != null) {
      sorted_products = matching_products.slice(0, 5).sortBy(function(product) {return product.name});
      
      if (sorted_products.size() > 0) {
        html = sorted_products.inject("", function(str, p) {
          return str += new EvalTemplate(this.filter_template).evaluate(p);
        }.bind(this));
      } else {
        html = Page.no_product_prompt_template;
      }
    } else {
      html = Page.add_product_prompt_template
    }
    
    if(html != '<li class="empty"></li>') {
      this.show_product_list(html)
      this.bind_keys_to_list();
    } else {
      this.hide_product_list();
    }
  },
  
  get_unadded_products_for_name: function(name) {
    try {
      if (name.blank()) {
        return null;
      } else {
        regexp = new RegExp(name.gsub(/[^a-z0-9]/i, '.?'), 'i');
        
        return $H(this.product_names_to_ids).inject( $A(), function(arr, pair) {       
            if (regexp.test(pair.first())) {
              var product = $H(this.products).get(pair.last());
              if(!this.has_added_product(product.name)) { arr.push(product) }
            }
            return arr;
        }.bind(this));
      }
    } catch(e) {
      return $A();
    }
  },

  has_added_product: function(product) {
    return  this.assigned_products().map(function(product_name){
              return product_name.toLowerCase();
            }).include(product.toLowerCase());
  },
    
  show_product_list: function(html) {
    this.selected_index = -1;
    this.available_list.show();
    this.available_list.update(html);
  },
  
  hide_product_list: function() {
    // Reset do_on_click_outside
    document.onmouseup = null;
    this.available_list.hide();
  },
  
  strip_dom_prefix: function(dom_id) {
    return dom_id.sub(/^(sidebar|new_topic)_/, '');
  },

  focused: function() {
    this.submittable = false;
    page.auto_hide_this(this.container, this.available_list);
    this.filter_products();
  },
  
  load_product_data: function(container) {
    new Ajax.Request(page.product_data_path, {
      method: 'get',
      onSuccess: function(request) { 
        product_data = eval('(' + request.responseText + ')');
        Object.extend(this, product_data);
        this.dispatcher.sync_data();
      }.bind(this)
    });
  },
  
  get_product: function(name) {
    if(name.blank()) { return null; }
    found_product =  $H(this.products).find(function(pair) {
      return Page.exact_match(name, pair.value.name)
    });
    if(!found_product) { return null; }    

    return found_product.last();    
  },

  observe: function(observed_field) {
    if (this.observer) { this.observer.stop() }
    this.observer = new Form.Element.Observer(observed_field, 0.2, function(el, value) {
      this.filter_products()
    }.bind(this));
  },
  
  // Navigate list with UP, DOWN, & RETURN keys
  // ...
  bind_keys_to_list: function() {
    if(this.keys_are_bound) return;
    this.selected_index = -1;
    this.product_input.onkeydown = this.bind_keys.bind(this);
    this.keys_are_bound = true;
  },
  
  bind_keys: function(event) {
    var key_code = ie ? window.event.keyCode : event.keyCode;
    if(key_code == Event.KEY_UP) {
      this.key_uparrow();
    } else if(key_code == Event.KEY_DOWN) {
      this.key_downarrow();
    } else if(key_code == Event.KEY_RETURN) {
      this.key_enter();
    }    
  },
  
  key_enter: function() {
    selected_item = this.available_list.down(".selected");
    if(selected_item) {
      selected_item.down().onclick();
    } else {
      this.add_from_input($F(this.product_input));
    }
  },
  
  key_downarrow: function() { this.set_selected_product(1); },
  key_uparrow: function() {
    if(this.available_list.visible()) {
      page.async(this.set_text_range.bind(this));
      this.set_selected_product(-1);
    }
  },
  
  set_selected_product: function(dir) {
    this.products_in_list = this.available_list.select("li");
    this.last_index = this.products_in_list.length-1;
    if(this.selected_index != -1) this.products_in_list[this.selected_index].removeClassName("selected");
    this.selected_index += dir;
    this.selected_index = this.selected_index > this.last_index ? this.last_index : this.selected_index;
    this.selected_index = this.selected_index == -2 ? -1 : this.selected_index;
    if(this.selected_index != -1) this.products_in_list[this.selected_index].addClassName("selected"); 
  },
  // Resets the text range to last index
  set_text_range: function() {
    pos = this.product_input.value.length;
    if(this.product_input.setSelectionRange) {
  		this.product_input.focus();
  		this.product_input.setSelectionRange(pos,pos);
  	} else if (ctrl.createTextRange) {
  		var range = this.product_input.createTextRange();
  		range.collapse(true);
  		range.moveEnd('character', pos);
  		range.moveStart('character', pos);
  		range.select();
  	}
  }
});

BatchProductDispatcher = Class.create();
Object.extend(BatchProductDispatcher.prototype, {
  initialize: function(element) { this.target_el = $(element); },
  get_assigned_products: function () {
    return new Page.ProductNames(this.target_el);
  },
  add_product: function(name, success, failure) {
    new Page.ProductNames(this.target_el).add(name);
    product_data = this.picker.get_product(name);
    this.add_product_to_assigned_list(name, product_data);
    success();
  },
  
  sync_display: function() {
    this.get_assigned_products().each(function(product_name) {
      this.add_product_to_assigned_list(product_name, this.picker.get_product(product_name));
    }.bind(this))
  },
  
  sync_data: function() {
    data = this.picker.assigned_products_data || [];
    this.target_el.value = data.join(',');
  },
  
  remove_product: function(name, success, failure) {
    new Page.ProductNames(this.target_el).remove(name);
    success();
  },
  
  add_product_to_assigned_list: function(product_name, product_data) {
    added_products_ul = this.picker.container.down('.added_products');
    if(product_data) {
      html_to_add = new EvalTemplate(Page.new_topic_added_product_template).evaluate(product_data);
    } else {
      html_to_add = new EvalTemplate(Page.new_topic_new_product_template).evaluate({name: product_name});
    }
    if(this.picker.container.id == 'new_topic_add_products') {
      empty_items = this.picker.added_products.select('.empty');
      if(empty_items.last()) {
        // remove placeholders
        $(empty_items.last()).up('li').remove();
      }
      new Insertion.Top(added_products_ul, html_to_add);
    } else {
      new Insertion.Bottom(added_products_ul, html_to_add);
    }
  }
});

SingleProductDispatcher = Class.create();
Object.extend(SingleProductDispatcher.prototype, {
  initialize: function() {},
  get_assigned_products: function () {
    return this.assigned_products_data
  },
  
  sync_data: function() {
    this.assigned_products_data = this.picker.assigned_products_data || [];
  },
  
  add_product: function(name, success, failure) {
    adding_spinner = picker.container.down('.sidebar_adding_product').show();
    result = null;
    new Ajax.Request(page.products_path, {
      method: 'post',
      evalScripts: true,
      parameters: {'topic[products]': name},
      onSuccess: function(request) { picker.container.down('.added_products').update(request.responseText); success();},
      onFailure: function(request) { failure(); },
      onComplete: function() {adding_spinner.hide(); this.filter_products();}.bind(this.picker)
    });
  },
  
  remove_product: function(name, success, failure) {
    new Ajax.Request(page.remove_products_path, {
      method: 'delete',
      evalScripts: true,
      parameters: {'product': name},
      onSuccess: function(request) {success()},
      onFailure: function(request) {failure()},
      onComplete: function() {this.filter_products();}.bind(this.picker)
    });
    
  }
});
PromptedField = Class.create();
PromptedField.prepare_submit = function(form) {
	form.select('.prompted').each( function(el) {
		if (el.onfocus) { el.onfocus() };
		if(el.prompter) {
			el.prompter.enabled = false;
			el.prompter.prepare_submit();
		}
  });
}

PromptedField.prototype = {
  initialize: function(element, prompt, dont_focus) {
    this.element = $(element);
    this.element.addClassName('prompted');
		this.enabled = true;
		if(this.element.prompter){ this.element.prompter.destroy(); }
		this.element.prompter = this;
    this.element.onfocus = null;

    this.focuser = this.focus.bind(this);
    Event.observe(this.element, 'focus', this.focuser);
    this.blurer = this.blur.bind(this);
    Event.observe(this.element, 'blur', this.blurer);
    
    this.prompt = prompt;
    if(!dont_focus) this.focus();
  },
  
  set_prompt: function() {
    field = $F(this.element);
    return field == this.prompt || field == "";
  }, 
  
  focus: function() {
    if(this.set_prompt() && this.enabled) {
      this.element.clear();
    }
    this.element.addClassName('focus');
  },
  
  blur: function() {
    if(this.set_prompt() && this.enabled) {
      this.element.value = this.prompt;
    }

    this.element.removeClassName('focus');
  },

	prepare_submit: function() {
		if(this.set_prompt()) {
			this.element.clear();
		}
	},
	
	destroy: function() {
	  Event.stopObserving(this.element, 'focus', this.focuser);
	  Event.stopObserving(this.element, 'blur', this.blurer);
	  this.element = null
	},
	
	transition_to: function(new_prompt) {
	  if(this.element.value == this.prompt || this.element.value == "") {
	    this.element.value = new_prompt;
	  } else {
	    this.element.focus()
	  }
	  
	  this.prompt = new_prompt;
	}
};

// ==============
// = new school =
// ==============

setupPromptedField = function(prompted_label) {
  var f = prompted_label.getAttribute("for") || prompted_label.getAttribute('htmlFor');

  if(!f){ return; }

  var input = $(f)

  input.observe("focus", function(){
    prompted_label.setStyle({ display: "none" })
  });

  input.observe("blur", function() {
    if ($F(input) == '') prompted_label.setStyle({ display: "block" })
  });

  prompted_label.observe("click", function() {
    input.focus();
  });

  if ($F(input) != '') prompted_label.hide();
}

removeFieldPrompt = function(field) {
 $$('label[for='+$(field).id+']').each(function(prompt) {
   prompt.setStyle({ textIndent: "-10000px" });
 });
}
MeToo = Class.create();
MeToo.prototype = {
  initialize: function(element) {
    this.element = $(element);
    this.overlay = this.element.down('.overlay');
    this.me_too_link = this.element.down('.me_too_link');
    this.timer; // create the timeout container
    this.element.onmouseover = null; // remove initializer
    this.element.onmouseinside(this.show_overlay.bind(this)); // tasty non-bubbling mouseover
    this.element.onmouseoutside(this.hide_overlay.bind(this)); // tasty non-bubbling mouseout
    
    if(this.me_too_link) {
      this.me_too_link.observe("click", this.click.bind(this))
    }
    
    this.show_overlay();
  },

  show_overlay: function() {
    this.timer = setTimeout(function() {
      this.overlay.show();
      this.overlay.style.opacity = 0.0;
      this.overlay.addClassName('active');
      
      // this.overlay.morph('active', {duration: 0.3, transition: Effect.Transitions.EaseTo});
      this.overlay.appear({duration: 0.3});
    }.bind(this), 100);
  },

  hide_overlay: function() {
    clearTimeout(this.timer)
    
    this.overlay.fade({duration: 0.5, afterFinish: this.reset.bind(this)});
  },
  
  reset: function() {
    this.overlay.removeClassName('hidden');
    this.overlay.removeClassName('active');
    this.overlay.hide();
  },
  
  click: function(event) {
    event.stop();
    this.element.addClassName("active")
    page.login_and_do(this.me_too_link, function() {
      new Ajax.Request(this.me_too_link.href, {
        asynchronous:true, 
        method: "post",
        evalScripts:true
      })
    }.bind(this), { prompt: "continue"})
  }
};

Links = {
  add_new_link: function(link, link_type) {
    var container = $(link).hasClassName('links_container') ? $(link) : $(link).up('.links_container');
    var label = link_type
    new Insertion.Bottom(container.down('.links'), 
      new EvalTemplate(Page.new_link_template).evaluate({index: this.new_link_index, label: label, link_type: link_type})
    );
    this.new_link_index += 1;
  },
  edit_link: function(link) {
    el = $(link).up('li');
    el.down('.link_display').hide();
    el.down('.link_fields').show();
  },
  remove_link: function(link) {
    el = $(link).up('li');
    new Effect.Fade(el, {duration: 0.3, afterFinish: el.remove.bind(el)});
  },
  
  new_link_index: 2
};


Object.extend(Page.prototype, Links)


// ==========================================================================
// = EvalTemplate does ruby-style interpretation on a string.               = 
// = optionally, you can pass a context through which it will get data from =
// ==========================================================================

// Example:
// new EvalTemplate("Hey #{user_name}!").evaluate({user_name:"Scott"}); 
// 
// Both return "Hey Scott!"

// EvalTemplate.update_run will interpolate on an elements innerHTML and set that back into the page
// Example:
// 
// HTML = <span id="foo">Hello #{user_name}!</span>
// EvalTemplate.update_run($('foo'), {user_name:"Scott"}));
// 
// This will update the html on the page to read:  <span id="foo">Hello Scott!</span>

var EvalTemplate = Class.create();
EvalTemplate.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
EvalTemplate.run = function(template, pattern) {
	return new EvalTemplate(template, pattern).evaluate();
};

EvalTemplate.update_run = function(element, context) {
	template = new EvalTemplate(unescape(element.innerHTML));
	new_html = template.evaluate(context);
	element.update(new_html);
};

EvalTemplate.prototype = {
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern  = pattern || EvalTemplate.Pattern;
  },

  evaluate: function(context) {
		if(context) {Object.extend(this, context);}
		
    return this.template.gsub(this.pattern, function(match) {
      var before = match[1];
      if (before == '\\') return match[2];
			return before + String.interpret(eval(match[3], this));
    }.bind(this));
  }
}
TextHelper = Class.create();
Object.extend(TextHelper, {

  tweet_length: function(string) {
    return string.escapeHTML().length
  }
})
SpinnerButton = {
  click: function(button, label) {
    if(!label){ label = 'Posting...';}
    
    page.async(function() { Field.disable($(button)) }); //cant immediately disable the button because the form wont submit.
    orig = $(button).down('span');
    orig.hide();
    new Insertion.After(orig, "<span>" + label + "</span>");
    //button.down('img').show();
  },
  
  reset: function(button) {
    //button.down('img').hide();
    orig = button.down('span');
    if (orig.next('span')) { orig.next('span').remove() };
    orig.show();
    button.disabled = false;
    Field.enable(button);
  },
  
  reset_all: function(scope) {
    $(scope).select(".spinner").each(function(spinner) {
      SpinnerButton.reset(spinner);
    })
  }
};
SmartTextarea = Class.create();

SmartTextarea.prototype = {
  initialize: function(el, options) {
    if(navigator.userAgent.indexOf('iPhone') > -1){ return; }
    
    this.el = $(el);
    this.el.style.height = "auto"
    this.start_h = this.el.scrollHeight;
    this.start_w = this.el.scrollWidth;
    this.observing = false;
    this.el.onfocus = this.start.bind(this);
    this.el.onblur = this.stop.bind(this);
    this.n_cols = this.el.cols //(this.el.width*.05);
    this.min_rows = 5;
    this.update_rows();
    this.start();
  },
  start: function() {
    if(!this.observing) {
      this.observing = true;
      Event.observe(this.el, "keyup", this.update_rows.bind(this));
    }
  },
  update_rows: function() {
    ln = this.el.value.split("\n"); // Get all rows
    this.n_rows = ln.length;
    for (var i=0; i < ln.length; i++) {
      this.n_rows += Math.floor(ln[i].length/this.n_cols); // for each row divide by cols
    };
    rows = this.n_rows < this.min_rows ? this.min_rows : this.n_rows;
    this.el.setAttribute("rows", rows)
  },
  stop: function() {
    this.observing = false;
  },
  reset: function() {
    this.el.style.height = this.start_h + "px";
  }
}
Combo = Class.create();
Combo.prototype = {
  initialize: function(el) {
    this.el = el;
    this.all_inputs = this.el.select("input");
    this.text_el = this.all_inputs.first();
    this.text_el.setAttribute('autocomplete', 'off');
    // if there are two inputs, the second holds the value (like the <option> element)
    if(this.all_inputs.length == 2) { this.value_el = this.all_inputs.last(); }
    this.click_el = this.el.down('img');
    this.menu = this.el.down('div.menu');
    this.locked = this.el.hasClassName('no_select');
    this.picker = this.el.hasClassName('picker');
    this.observers();
    this.menu_observers();

    var on = el.select(".on")[0];
    if(on) {
      this.menu_click((on.down("a").down("span") || on.down("a")).innerHTML);      
    }
  },
  observers: function() {
    this.click_el.observe("click", this.click.bind(this));
    this.text_el.observe("focus", this.click.bind(this));
    if(this.locked) {
      this.text_el.observe("focus", this.text_el.blur);
    } else {
      this.text_el.observe("focus", function() {
        if($F(this.text_el) == this.text_el.prompted_text) {
          this.text_el.value = '';
          if(!this.keys_bound) {
            this.keys = new key_navigate(this.menu, {observe_field: this.text_el, selector: 'a', active_class: 'on', callback: this.handle_callback.bind(this)});
            
            if(this.el.next() && this.el.next().hasClassName('submit')) {
              this.el.next().observe('click', this.keys.do_callback.bind(this.keys))
            }
            this.keys_bound = true;
          }
        }
      }.bind(this));
    }
  },
  menu_observers: function() {
    this.menu.select("a").each(function(el) {
      el.observe("click", this.menu_click.bind(this, (el.down('span') || el).innerHTML));
    }.bind(this));
  },
  menu_click: function(value) {
    page.notify(value);
    this.text_el.value = value;
    this.menu.hide();
    this.onmousedown = null;
  },
  click: function() {
    if(!this.locked) {
      this.menu.show();
    } else {
      this.menu.toggle();
    }
    page.auto_hide_this(this.el, this.menu, this.call_out.bind(this)); 
  },
  blur: function() {
    this.call_out();
    this.menu.hide();
  },
  call_out: function() {
    if($F(this.text_el) == '')
    this.text_el.value = this.text_el.prompted_text;
  },
  handle_callback: function(el) {
    if(!el) return;
    if(this.picker) {
      this.set_selection(el);
    } else {
      this.follow_link(el);
    }
  },
  follow_link: function(el) {
    this.text_el.addClassName('disabled');
    if(el.hasClassName('attach_query')) {
      var query_str = $F(this.text_el);
      HREF = el.getAttribute("title")+"?query="+query_str;
    } else {
      HREF = el.getAttribute("title");
      this.set_value(el.down('span').innerHTML, el.getAttribute("title"));
    }
    document.location.href = HREF;    
  },
  set_selection: function(el) {
    this.set_value(el.down('span').innerHTML, el.getAttribute("title"));
  },
  formatResults: function(results_container) {
    this.menu.show();
    $(results_container).select('a').each(function(el) {
      if (!el.hasClassName('exempt')) {
        el.href = '#';
        el.onclick = function() {
          this.handle_callback(el);
          return false;
        }.bind(this);
      }
    }.bind(this))
  },
  set_value: function(text, value) {
    this.text_el.value = text;
    if(this.value_el) { this.value_el.value = value; }
    this.menu.hide();
  },
  get_value: function() {
    return $F(this.value_el);
  }
};

key_navigate = Class.create();
key_navigate.prototype = {
  initialize: function(el, options) {
    this.options = options;
    this.el = el;
    this.update_selectable();
    this.options.observe_field.observe("keydown", this.key_events.bind(this));
  },
  key_events: function(event) {
    var key_code = ie ? window.event.keyCode : event.keyCode;
    if(key_code == Event.KEY_UP) {
      this.move_selection(-1);
    } else if(key_code == Event.KEY_DOWN) {
      this.move_selection(1);
    } else if(key_code == Event.KEY_RETURN) {
      this.do_callback();
    } else if(key_code == Event.KEY_TAB) {
      this.el.up('.combo').combo.blur();
    }
  },
  get_selected_element: function() {
    return this.el.down("."+this.options.active_class)
  },
  get_selected_index: function() {
    this.update_selectable();
    for(i=0; i<this.selectable.length; i++) {
      if(this.selectable[i] == this.get_selected_element()) {
        return i; break;
      }
    } return -1;
  },
  move_selection: function(dir) {
    var next_index = this.get_selected_index()+dir;
    if((next_index == -1 && dir == -1) || (next_index == -2 && dir == -1)) {
      if(this.get_selected_element()) {
        this.get_selected_element().removeClassName(this.options.active_class); 
      } return;
    }
    if(next_index == this.selectable.length && dir == 1) return;
    if(this.get_selected_element()) this.get_selected_element().removeClassName(this.options.active_class);
    this.selectable[next_index].addClassName(this.options.active_class);
  },
  do_callback: function() {
    this.options.callback(this.get_selected_element())
  },
  update_selectable: function() {
    this.selectable = this.el.select(this.options.selector);
  }
};
ContextMenu = Class.create();
ContextMenu.prototype = {
  initialize: function(el, callback, options) {
    evt = options && options.event ? options.event : 'click'; // Click, MouseOver
    this.el = $(el);
    this.menu = this.el.next();
    this.callback = callback;
    this.el.observe(evt, this.activate.bind(this))
  },
  activate: function() {
    this.menu.toggle();
    page.auto_hide_this(this.menu);
    if(this.callback) this.callback();
  }
}
User = Class.create();
User.prototype = {
  initialize:function() {
    
  },

  nick: function() {
    return String.interpret(Cookie.get('user_nick')).gsub(/\+/, ' ');
  },
  
  name: function() {
    field = String.interpret(Cookie.get('use_real_name')) == 'true' ? 'user_name' : 'user_nick'
    name = String.interpret(Cookie.get(field)).gsub(/\+/, ' ');
    if (name.blank()) {
      return String.interpret(Cookie.get('user_nick')).gsub(/\+/, ' ');
    } else {
      return name;
    }
  },

  avatar_url: function(version) {
    file_base = String.interpret(Cookie.get('avatar_url'));
    if(version) {
      if (file_base.blank()) {
        return '#';
      } else {
        components = file_base.split('.');
        return String.interpret(components.first() + "_" + version + '.' + components.last());
      }
    } else {
      return file_base;
    }
  }
};


Followable = Class.create();
Followable.login_success_template = "\n  Thanks!\n";
Followable.following_data = $H();
Followable.followable_elements = $A();

Followable.prototype = {
  
  initialize: function() {
    page.watch('login', function() { this.get_status() }.bind(this));
  },
  
  detect_followables: function() {
    setTimeout(function() {
      Followable.followable_elements = $('page').select(".followable");
      if(Followable.followable_elements.size() > 0) {
        this.get_status();
      }
    }.bind(this), 1000);
  },

  get_followable_dom_ids: function() {
    if(Followable.followable_elements.size() > 0) {
      return Followable.followable_elements.map(function(f) { return $w($(f).className).first()})
    } else {
      return [];
    }
  },

  get_status: function() {
    if(page.logged_in()) {
      new Ajax.Request('/me/followed.js', {
        method: 'get',
        parameters: {'followables[]': this.get_followable_dom_ids()},
        evalJSON: 'force',
        onSuccess: function(request) {
          Followable.following_data = $H(request.responseJSON);
          this.activate_followable_elements();
        }.bind(this)
      });
    } else {
      Followable.following_data = $H();
      this.activate_followable_elements();
    }
  },

  activate_followable_elements: function() {
    Followable.followable_elements.async_each(function(el) {
      if(!el.hasClassName("empty")) {
        el.followable = new FollowableElement(el);
      }
    }.bind(this));
  }
}

FollowableElement = Class.create();

FollowableElement.prototype = {
  
  initialize: function(el) {
    this.element = $(el);
    this.dom_id = $w(el.className).first();
    Object.extend(this, Followable.following_data.get(this.dom_id));
    this.follow_template = $('followable_dropdown');
    this.followable_type = this.get_followable_type();
    this.enable_activate_link();
    this.enable_delete_button();
    Followable.following_data.get(this.dom_id) ? this.set_as_followed(el) : this.set_as_followable(el);
  },
  
  enable_activate_link: function() {
    this.activate_link = this.element.down(".activate");
    this.activate_link.show();
  },
  
  enable_delete_button: function() {
    if(this.delete_button = this.element.down(".delete")) {
      this.delete_button.show();
    }
  },
  
  activate_overlay: function() {
    this.follow_template.followable = this;
    this.follow_template.dockTo(this.activate_link, {target_point: 'bl'});
    page.auto_hide_this(this.follow_template, this.follow_template, this.hide_dropdown.bind(this));
    page.adjust_scroll_position(this.follow_template, 5);
    this.follow_template.update("<div class=\"pad\">Loading...</div>");
    this.follow_template.show();
  },
  
  get_followable_type: function() {
    return $A(this.dom_id.split('_')).first();
  },
  
  hide_dropdown: function() {
    if (this.follow_template.visible()) { this.follow_template.hide(); }
    document.onmousedown = null;
  },
  
  set_as_followable: function() {
    this.element.select(".activate").invoke('show');
    this.element.select(".activate").invoke('update', '?');
  },

  set_as_followed: function(el) {
    this.element.addClassName("following");
    this.element.select(".activate").invoke('show');
    this.update_activate_link_with_score();
  },
  
  update_activate_link_with_score: function() {
    if(this.activate_link != null) {
      this.activate_link.update(this.net_promoter_score);
      this.activate_link.addClassName("nps_" + this.net_promoter_score);
    }
  }
}
Breadcrumb = {
  expand : function(link) {
    var link = $(link);
    var crumb = link.up('.crumb');
    var hide_element = crumb.down('.crumb_select');
    crumb.toggleClassName('open');
    crumb.autoHide(hide_element, Breadcrumb.clean);
    document.getElementsByTagName('body')[0].onmousedown = function(event) {
      Breadcrumb.hide({element: crumb, callback: Breadcrumb.clean}, event);
    }
  },

  hide : function(options, event) {
    var target = ie ? window.event.srcElement : event.target;
    element = options.element;
    if($(target).outside(element)) {
      element.removeClassName('open')
      document.onmouseup = null; document.onmousedown = null;
      if(options.callback != null) options.callback();
    }
  },

  clean : function() {
    $('crumbs').select('.crumb').invoke("removeClassName", "open");
  },

  over : function(link) {
    $(link).up('.crumb').addClassName('hover');
  },
  
  out : function(link) {
    $(link).up('.crumb').removeClassName('hover');
  }
};


StartTopicBox = Class.create();
StartTopicBox.LABELS = {
  question: "<strong>Ask a question</strong>. We'll look for answers.",
  idea:     "<strong>Share an idea</strong>. We'll see if other people have this idea, too.",
  problem:  "<strong>Report a problem</strong>. We'll look for solutions.",
  praise:   "What makes you happy about this company?",
  update:   "News or updates for your customers go here.",
  tip:      "<strong>Got a tip?</strong> Suggest it here." 
};

StartTopicBox.prototype = {
  initialize: function(element, path) {
    this.element = $(element);
    this.path = path;
    
    var anchors = this.element.select('.style_tabs li a');
    anchors.invoke('observe', 'click', this.selectStyle.bind(this));
    var submitter = this.submitter();
    $(submitter).observe("click", this.searchIfNeeded.bind(this));
    $(this.resetter()).observe("click", this.reset.bind(this));
    
    this.update();
  },
  
  selectStyle: function(event) {
    var link = event.findElement();
    var style = Util.anchor(link.href);
    this.setStyle(style);
    this.update();
    event.stop();
  },
  
  update: function() {
    var style = this.getStyle();
    this.setLabel(StartTopicBox.LABELS[style]);
    var target_li = $(this.element).down(".style_tabs ." + style);
    target_li.tabToggle('li', 'active');
  },
  
  getStyle: function() {
    return $(this.element).down(".style").getValue();
  },
  
  setStyle: function(value) {
    $(this.element).down(".style").setValue(value);
  },
  
  setLabel: function(label) {
    this.topic_prompt().show().update(label);
  },
  
  emptyCheck: function() {
    var empty = $F(this.query_field()).blank();
    if (empty) {
      this.setLabel('<em>Please ask your question before clicking continue.</em>');
      return false;
    } else {
      return true;
    }
  },
  
  searchIfNeeded: function(event) {
    if(!this.emptyCheck()){ event.stop(); return false; }
    
    if(!this.search_results().visible()) {
      event.stop();
      this.submitter().setValue("Continue...");
      this.submitter().blur();
      
      new Ajax.Request(this.path, {
        asynchronous:true,
        method: "get",
        parameters: {query:$F(this.query_field())},
        evalScripts:true
      });
    }
  },
  
  showResults: function() {
    this.setLabel("<strong>Someone might have already asked your question.</strong> Do any of these match?");
    this.search_results().blindDown({
      duration: 0.4,
      afterFinish: function() {
        this.resetter().show();
        this.submitter().setValue('Nope. Finish posting my question');
      }.bind(this)
    })
  },
  
  continuePosting: function() {
    this.element.down("form").submit();
  },
  
  reset: function() {
    this.submitter().setValue("Continue");
    this.resetter().hide();
    this.topic_prompt().update(StartTopicBox.LABELS['question']);
    this.search_results().blindUp({duration: 0.4});
  },
  
  submitter: function() {
    return this.element.down('input.submit');
  },
  
  resetter: function() {
    return this.element.down('.reset');
  },
    
  topic_prompt: function() {
    return this.element.down('.prompt');
  },
   
  search_results: function() {
    return this.element.down('.results_container');
  },
  
  query_field: function() {
    return this.element.down('.query');
  }
}
DigestersForm = {
  after: function(form) {
    $(form).down('.error_message').hide();
    $(form).select('label.enabled input').each(function(e) { disabled = true });
  },
  
  complete: function(form, response) {
    if (response.status != 200 || /\<errors\>/.match(response.responseText)) {
      $(form).down('.error_message').show();
    }
    $(form).select('label.enabled input').each(function(e) { e.disabled = false });
  }
};

extend = function(destination, source) {
  for (var property in source) {
    destination[property] = source[property];
  }
  return destination;
}

roll_footer_quotes = function() {
  cur_q = 0;
  qi = setInterval(function() {
    if($('q_'+cur_q)) {
      $('q_'+cur_q).hide();
    }
    if(cur_q<5) {
      cur_q ++;
    } else {
      cur_q = 1;
    }
    if($('q_'+cur_q)) {
      $('q_'+cur_q).show();
    }
  }, 11000);
}

flash_object = function(movieName) {
  var isIE = navigator.appName.indexOf("Microsoft") != -1;
  return (isIE) ? window[movieName] : document[movieName];
}

copy_success = function() {
  // Flash as callback
}

toggle_more = function(link, group) {
  group.immediateDescendants().each(function(el) {
    if(el.hasClassName('collapse')) {
      el.hide();
      if(link != false) link.update('show more...');
      el.removeClassName('collapse')
    } else if(!el.visible()) {
      el.show();
      if(link != false) link.update('...show less');
      el.addClassName('collapse')
    }
  });
}

var current_user = new User();


FastInit.addOnLoad(function() {
  roll_footer_quotes();
  
	page.watch('login', function(){
	  if($('submit_style_buttons')) {
	    $('topic_user_avatar').src = current_user.avatar_url();
	    $('topic_submit_message').show();
	    $('topic_submit_message').update("Welcome back " + current_user.nick() + "! How would you like to submit your topic?");
	    $('topic_login_form').hide();
	    Effect.Appear('submit_style_buttons', {duration: 0.4})
	  }
	});
});


/*
Gradual Transitions
*/
// EaseFromTo (adapted from “Quart.EaseInOut”)
Effect.Transitions.EaseFromTo = function(pos) {
  if ((pos/=0.5) < 1) return 0.5*Math.pow(pos,4);
  return -0.5 * ((pos-=2)*Math.pow(pos,3) - 2);
};
// EaseFrom (adapted from “Quart.EaseIn”)
Effect.Transitions.EaseFrom = function(pos) {
  return Math.pow(pos,4);
};
// EaseTo (adapted from “Quart.EaseOut”)
Effect.Transitions.EaseTo = function(pos) {
  return Math.pow(pos,0.25);
};

function goto_parature(link, task) {
  if(!page.company){ return false; }
  var the_task
  if(!task){ the_task = ""; } else { the_task = task; }
  
  page.login_and_do(link, function() {
    page.safe_redirect("/" + page.company + "/parature_pass_through?task=" + escape(the_task))
  })
  
  return false;
}