/*
Script: Core.js
  MooTools - My Object Oriented JavaScript Tools.

License:
  MIT-style license.

Copyright:
  Copyright (c) 2006-2007 [Valerio Proietti](http://mad4milk.net/).

Code & Documentation:
  [The MooTools production team](http://mootools.net/developers/).

Inspiration:
  - Class implementation inspired by [Base.js](http://dean.edwards.name/weblog/2006/03/base/) Copyright (c) 2006 Dean Edwards, [GNU Lesser General Public License](http://opensource.org/licenses/lgpl-license.php)
  - Some functionality inspired by [Prototype.js](http://prototypejs.org) Copyright (c) 2005-2007 Sam Stephenson, [MIT License](http://opensource.org/licenses/mit-license.php)
*/

var MooTools = {
  'version': '1.2dev',
  'build': '1544'
};
      
var Native = function(options){
  options = options || {};

  var afterImplement = options.afterImplement || function(){};
  var generics = options.generics;
  generics = (generics !== false);
  var legacy = options.legacy;
  var initialize = options.initialize;
  var protect = options.protect;
  var name = options.name;

  var object = initialize || legacy;

  object.constructor = Native;
  object.$family = {name: 'native'};
  if (legacy && initialize) object.prototype = legacy.prototype;
  object.prototype.constructor = object;

  if (name){
    var family = name.toLowerCase();
    object.prototype.$family = {name: family};
    Native.typize(object, family);
  }

  var add = function(obj, name, method, force){
    if (!protect || force || !obj.prototype[name]) obj.prototype[name] = method;
    if (generics) Native.genericize(obj, name, protect);
    afterImplement.call(obj, name, method);
    return obj;
  };
  
  object.implement = function(a1, a2, a3){
    if (typeof a1 == 'string') return add(this, a1, a2, a3);
    for (var p in a1) add(this, p, a1[p], a2);
    return this;
  };
  
  object.alias = function(a1, a2, a3){
    if (typeof a1 == 'string'){
      a1 = this.prototype[a1];
      if (a1) add(this, a2, a1, a3);
    } else {
      for (var a in a1) this.alias(a, a1[a], a2);
    }
    return this;
  };

  return object;
};

Native.implement = function(objects, properties){
  for (var i = 0, l = objects.length; i < l; i++) objects[i].implement(properties);
};

Native.genericize = function(object, property, check){
  if ((!check || !object[property]) && typeof object.prototype[property] == 'function') object[property] = function(){
    var args = Array.prototype.slice.call(arguments);
    return object.prototype[property].apply(args.shift(), args);
  };
};

Native.typize = function(object, family){
  if (!object.type) object.type = function(item){
    return ($type(item) === family);
  };
};

Native.alias = function(objects, a1, a2, a3){
  for (var i = 0, j = objects.length; i < j; i++) objects[i].alias(a1, a2, a3);
};

(function(objects){
  for (var name in objects) Native.typize(objects[name], name.toLowerCase());
})({'Boolean': Boolean, 'Native': Native, 'Object': Object});

(function(objects){
  for (var name in objects) new Native({name: name, initialize: objects[name], protect: true});
})({'String': String, 'Function': Function, 'Number': Number, 'Array': Array, 'RegExp': RegExp, 'Date': Date});

(function(object, methods){
  for (var i = 0, l = methods.length; i < l; i++) Native.genericize(object, methods[i], true);
  return arguments.callee;
})
(Array, ['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift', 'concat', 'join', 'slice', 'toString', 'valueOf', 'indexOf', 'lastIndexOf'])
(String, ['charAt', 'charCodeAt', 'concat', 'indexOf', 'lastIndexOf', 'match', 'replace', 'search', 'slice', 'split', 'substr', 'substring', 'toLowerCase', 'toUpperCase', 'valueOf']);

function $chk(obj){
  return !!(obj || obj === 0);
};

function $clear(timer){
  clearTimeout(timer);
  clearInterval(timer);
  return null;
};

function $defined(obj){
  return (obj != undefined);
};

function $empty(){};

function $arguments(i){
  return function(){
    return arguments[i];
  };
};

function $lambda(value){
  return (typeof value == 'function') ? value : function(){
    return value;
  };
};

function $extend(original, extended){
  for (var key in (extended || {})) original[key] = extended[key];
  return original;
};

function $unlink(object){
  var unlinked = null;
  
  switch ($type(object)){
    case 'object':
      unlinked = {};
      for (var p in object) unlinked[p] = $unlink(object[p]);
    break;
    case 'hash':
      unlinked = $unlink(object.getClean());
    break;
    case 'array':
      unlinked = [];
      for (var i = 0, l = object.length; i < l; i++) unlinked[i] = $unlink(object[i]);
    break;
    default: return object;
  }
  
  return unlinked;
};

function $merge(){
  var mix = {};
  for (var i = 0, l = arguments.length; i < l; i++){
    var object = arguments[i];
    if ($type(object) != 'object') continue;
    for (var key in object){
      var op = object[key], mp = mix[key];
      mix[key] = (mp && $type(op) == 'object' && $type(mp) == 'object') ? $merge(mp, op) : $unlink(op);
    }
  }
  return mix;
};

function $pick(){
  for (var i = 0, l = arguments.length; i < l; i++){
    if (arguments[i] != undefined) return arguments[i];
  }
  return null;
};

function $random(min, max){
  return Math.floor(Math.random() * (max - min + 1) + min);
};

function $splat(obj){
  var type = $type(obj);
  return (type) ? ((type != 'array' && type != 'arguments') ? [obj] : obj) : [];
};

var $time = Date.now || function(){
  return new Date().getTime();
};

function $try(){
  for (var i = 0, l = arguments.length; i < l; i++){
    try {
      return arguments[i]();
    } catch(e){}
  }
  return null;
};

function $type(obj){
  if (obj == undefined) return false;
  if (obj.$family) return (obj.$family.name == 'number' && !isFinite(obj)) ? false : obj.$family.name;
  if (obj.nodeName){
    switch (obj.nodeType){
      case 1: return 'element';
      case 3: return (/\S/).test(obj.nodeValue) ? 'textnode' : 'whitespace';
    }
  } else if (typeof obj.length == 'number'){
    if (obj.callee) return 'arguments';
    else if (obj.item) return 'collection';
  }
  return typeof obj;
};

var Hash = new Native({

  name: 'Hash',

  initialize: function(object){
    if ($type(object) == 'hash') object = $unlink(object.getClean());
    for (var key in object) this[key] = object[key];
    return this;
  }

});

Hash.implement({
  
  getLength: function(){
    var length = 0;
    for (var key in this){
      if (this.hasOwnProperty(key)) length++;
    }
    return length;
  },

  forEach: function(fn, bind){
    for (var key in this){
      if (this.hasOwnProperty(key)) fn.call(bind, this[key], key, this);
    }
  },
  
  getClean: function(){
    var clean = {};
    for (var key in this){
      if (this.hasOwnProperty(key)) clean[key] = this[key];
    }
    return clean;
  }

});

Hash.alias('forEach', 'each');

function $H(object){
  return new Hash(object);
};

Array.implement({

  forEach: function(fn, bind){
    for (var i = 0, l = this.length; i < l; i++) fn.call(bind, this[i], i, this);
  }

});

Array.alias('forEach', 'each');

function $A(iterable){
  if (iterable.item){
    var array = [];
    for (var i = 0, l = iterable.length; i < l; i++) array[i] = iterable[i];
    return array;
  }
  return Array.prototype.slice.call(iterable);
};

function $each(iterable, fn, bind){
  var type = $type(iterable);
  ((type == 'arguments' || type == 'collection' || type == 'array') ? Array : Hash).each(iterable, fn, bind);
};


/*
Script: Browser.js
  The Browser Core. Contains Browser initialization, Window and Document, and the Browser Hash.

License:
  MIT-style license.
*/

var Browser = new Hash({
  Engine: {name: 'unknown', version: ''},
  Platform: {name: (navigator.platform.match(/mac|win|linux/i) || ['other'])[0].toLowerCase()},
  Features: {xpath: !!(document.evaluate), air: !!(window.runtime)},
  Plugins: {}
});

if (window.opera) Browser.Engine = {name: 'presto', version: (document.getElementsByClassName) ? 950 : 925};
else if (window.ActiveXObject) Browser.Engine = {name: 'trident', version: (window.XMLHttpRequest) ? 5 : 4};
else if (!navigator.taintEnabled) Browser.Engine = {name: 'webkit', version: (Browser.Features.xpath) ? 420 : 419};
else if (document.getBoxObjectFor != null) Browser.Engine = {name: 'gecko', version: (document.getElementsByClassName) ? 19 : 18};
Browser.Engine[Browser.Engine.name] = Browser.Engine[Browser.Engine.name + Browser.Engine.version] = true;

if (window.orientation != undefined) Browser.Platform.name = 'ipod';

Browser.Platform[Browser.Platform.name] = true;

Browser.Request = function(){
  return $try(function(){
    return new XMLHttpRequest();
  }, function(){
    return new ActiveXObject('MSXML2.XMLHTTP');
  });
};

Browser.Features.xhr = !!(Browser.Request());

Browser.Plugins.Flash = (function(){
  var version = ($try(function(){
    return navigator.plugins['Shockwave Flash'].description;
  }, function(){
    return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
  }) || '0 r0').match(/\d+/g);
  return {version: parseInt(version[0] || 0 + '.' + version[1] || 0), build: parseInt(version[2] || 0)};
})();

function $exec(text){
  if (!text) return text;
  if (window.execScript){
    window.execScript(text);
  } else {
    var script = document.createElement('script');
    script.setAttribute('type', 'text/javascript');
    script.text = text;
    document.head.appendChild(script);
    document.head.removeChild(script);
  }
  return text;
};

Native.UID = 1;

var $uid = (Browser.Engine.trident) ? function(item){
  return (item.uid || (item.uid = [Native.UID++]))[0];
} : function(item){
  return item.uid || (item.uid = Native.UID++);
};

var Window = new Native({

  name: 'Window',

  legacy: (Browser.Engine.trident) ? null: window.Window,

  initialize: function(win){
    $uid(win);
    if (!win.Element){
      win.Element = $empty;
      if (Browser.Engine.webkit) win.document.createElement("iframe"); //fixes safari 2
      win.Element.prototype = (Browser.Engine.webkit) ? window["[[DOMElement.prototype]]"] : {};
    }
    return $extend(win, Window.Prototype);
  },

  afterImplement: function(property, value){
    window[property] = Window.Prototype[property] = value;
  }

});

Window.Prototype = {$family: {name: 'window'}};

new Window(window);

var Document = new Native({

  name: 'Document',

  legacy: (Browser.Engine.trident) ? null: window.Document,

  initialize: function(doc){
    $uid(doc);
    doc.head = doc.getElementsByTagName('head')[0];
    doc.html = doc.getElementsByTagName('html')[0];
    doc.window = doc.defaultView || doc.parentWindow;
    if (Browser.Engine.trident4) $try(function(){
      doc.execCommand("BackgroundImageCache", false, true);
    });
    return $extend(doc, Document.Prototype);
  },

  afterImplement: function(property, value){
    document[property] = Document.Prototype[property] = value;
  }

});

Document.Prototype = {$family: {name: 'document'}};

new Document(document);

/*
Script: Array.js
  Contains Array Prototypes like copy, each, contains, and remove.

License:
  MIT-style license.
*/

Array.implement({

  every: function(fn, bind){
    for (var i = 0, l = this.length; i < l; i++){
      if (!fn.call(bind, this[i], i, this)) return false;
    }
    return true;
  },

  filter: function(fn, bind){
    var results = [];
    for (var i = 0, l = this.length; i < l; i++){
      if (fn.call(bind, this[i], i, this)) results.push(this[i]);
    }
    return results;
  },
  
  clean: function() {
    return this.filter($defined);
  },

  indexOf: function(item, from){
    var len = this.length;
    for (var i = (from < 0) ? Math.max(0, len + from) : from || 0; i < len; i++){
      if (this[i] === item) return i;
    }
    return -1;
  },

  map: function(fn, bind){
    var results = [];
    for (var i = 0, l = this.length; i < l; i++) results[i] = fn.call(bind, this[i], i, this);
    return results;
  },

  some: function(fn, bind){
    for (var i = 0, l = this.length; i < l; i++){
      if (fn.call(bind, this[i], i, this)) return true;
    }
    return false;
  },

  associate: function(keys){
    var obj = {}, length = Math.min(this.length, keys.length);
    for (var i = 0; i < length; i++) obj[keys[i]] = this[i];
    return obj;
  },

  link: function(object){
    var result = {};
    for (var i = 0, l = this.length; i < l; i++){
      for (var key in object){
        if (object[key](this[i])){
          result[key] = this[i];
          delete object[key];
          break;
        }
      }
    }
    return result;
  },

  contains: function(item, from){
    return this.indexOf(item, from) != -1;
  },

  extend: function(array){
    for (var i = 0, j = array.length; i < j; i++) this.push(array[i]);
    return this;
  },

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

  getRandom: function(){
    return (this.length) ? this[$random(0, this.length - 1)] : null;
  },

  include: function(item){
    if (!this.contains(item)) this.push(item);
    return this;
  },

  combine: function(array){
    for (var i = 0, l = array.length; i < l; i++) this.include(array[i]);
    return this;
  },

  erase: function(item){
    for (var i = this.length; i--; i){
      if (this[i] === item) this.splice(i, 1);
    }
    return this;
  },

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

  flatten: function(){
    var array = [];
    for (var i = 0, l = this.length; i < l; i++){
      var type = $type(this[i]);
      if (!type) continue;
      array = array.concat((type == 'array' || type == 'collection' || type == 'arguments') ? Array.flatten(this[i]) : this[i]);
    }
    return array;
  },

  hexToRgb: function(array){
    if (this.length != 3) return null;
    var rgb = this.map(function(value){
      if (value.length == 1) value += value;
      return value.toInt(16);
    });
    return (array) ? rgb : 'rgb(' + rgb + ')';
  },

  rgbToHex: function(array){
    if (this.length < 3) return null;
    if (this.length == 4 && this[3] == 0 && !array) return 'transparent';
    var hex = [];
    for (var i = 0; i < 3; i++){
      var bit = (this[i] - 0).toString(16);
      hex.push((bit.length == 1) ? '0' + bit : bit);
    }
    return (array) ? hex : '#' + hex.join('');
  }

});

/*
Script: Function.js
  Contains Function Prototypes like create, bind, pass, and delay.

License:
  MIT-style license.
*/

Function.implement({

  extend: function(properties){
    for (var property in properties) this[property] = properties[property];
    return this;
  },

  create: function(options){
    var self = this;
    options = options || {};
    return function(event){
      var args = options.arguments;
      args = (args != undefined) ? $splat(args) : Array.slice(arguments, (options.event) ? 1 : 0);
      if (options.event) args = [event || window.event].extend(args);
      var returns = function(){
        return self.apply(options.bind || null, args);
      };
      if (options.delay) return setTimeout(returns, options.delay);
      if (options.periodical) return setInterval(returns, options.periodical);
      if (options.attempt) return $try(returns);
      return returns();
    };
  },

  pass: function(args, bind){
    return this.create({arguments: args, bind: bind});
  },

  attempt: function(args, bind){
    return this.create({arguments: args, bind: bind, attempt: true})();
  },

  bind: function(bind, args){
    return this.create({bind: bind, arguments: args});
  },

  bindWithEvent: function(bind, args){
    return this.create({bind: bind, event: true, arguments: args});
  },

  delay: function(delay, bind, args){
    return this.create({delay: delay, bind: bind, arguments: args})();
  },

  periodical: function(interval, bind, args){
    return this.create({periodical: interval, bind: bind, arguments: args})();
  },

  run: function(args, bind){
    return this.apply(bind, $splat(args));
  }

});

/*
Script: Number.js
  Contains Number Prototypes like limit, round, times, and ceil.

License:
  MIT-style license.
*/

Number.implement({

  limit: function(min, max){
    return Math.min(max, Math.max(min, this));
  },

  round: function(precision){
    precision = Math.pow(10, precision || 0);
    return Math.round(this * precision) / precision;
  },

  times: function(fn, bind){
    for (var i = 0; i < this; i++) fn.call(bind, i, this);
  },

  toFloat: function(){
    return parseFloat(this);
  },

  toInt: function(base){
    return parseInt(this, base || 10);
  }

});

Number.alias('times', 'each');

(function(math){
  var methods = {};
  math.each(function(name){
    if (!Number[name]) methods[name] = function(){
      return Math[name].apply(null, [this].concat($A(arguments)));
    };
  });
  Number.implement(methods);
})(['abs', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'exp', 'floor', 'log', 'max', 'min', 'pow', 'sin', 'sqrt', 'tan']);

/*
Script: String.js
  Contains String Prototypes like camelCase, capitalize, test, and toInt.

License:
  MIT-style license.
*/

String.implement({

  test: function(regex, params){
    return ((typeof regex == 'string') ? new RegExp(regex, params) : regex).test(this);
  },

  contains: function(string, separator){
    return (separator) ? (separator + this + separator).indexOf(separator + string + separator) > -1 : this.indexOf(string) > -1;
  },

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

  clean: function(){
    return this.replace(/\s+/g, ' ').trim();
  },

  camelCase: function(){
    return this.replace(/-\D/g, function(match){
      return match.charAt(1).toUpperCase();
    });
  },

  hyphenate: function(){
    return this.replace(/[A-Z]/g, function(match){
      return ('-' + match.charAt(0).toLowerCase());
    });
  },

  capitalize: function(){
    return this.replace(/\b[a-z]/g, function(match){
      return match.toUpperCase();
    });
  },

  escapeRegExp: function(){
    return this.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
  },

  toInt: function(base){
    return parseInt(this, base || 10);
  },

  toFloat: function(){
    return parseFloat(this);
  },

  hexToRgb: function(array){
    var hex = this.match(/^#?(\w{1,2})(\w{1,2})(\w{1,2})$/);
    return (hex) ? hex.slice(1).hexToRgb(array) : null;
  },

  rgbToHex: function(array){
    var rgb = this.match(/\d{1,3}/g);
    return (rgb) ? rgb.rgbToHex(array) : null;
  },

  stripScripts: function(option){
    var scripts = '';
    var text = this.replace(/<script[^>]*>([\s\S]*?)<\/script>/gi, function(){
      scripts += arguments[1] + '\n';
      return '';
    });
    if (option === true) $exec(scripts);
    else if ($type(option) == 'function') option(scripts, text);
    return text;
  },

  substitute: function(object, regexp){
    return this.replace(regexp || (/\\?\{([^}]+)\}/g), function(match, name){
      if (match.charAt(0) == '\\') return match.slice(1);
      return (object[name] != undefined) ? object[name] : '';
    });
  }

});

/*
Script: Hash.js
  Contains Hash Prototypes. Provides a means for overcoming the JavaScript practical impossibility of extending native Objects.

License:
  MIT-style license.
*/

Hash.implement({

  has: Object.prototype.hasOwnProperty,

  keyOf: function(value){
    for (var key in this){
      if (this.hasOwnProperty(key) && this[key] === value) return key;
    }
    return null;
  },

  hasValue: function(value){
    return (Hash.keyOf(this, value) !== null);
  },

  extend: function(properties){
    Hash.each(properties, function(value, key){
      Hash.set(this, key, value);
    }, this);
    return this;
  },

  combine: function(properties){
    Hash.each(properties, function(value, key){
      Hash.include(this, key, value);
    }, this);
    return this;
  },

  erase: function(key){
    if (this.hasOwnProperty(key)) delete this[key];
    return this;
  },

  get: function(key){
    return (this.hasOwnProperty(key)) ? this[key] : null;
  },

  set: function(key, value){
    if (!this[key] || this.hasOwnProperty(key)) this[key] = value;
    return this;
  },

  empty: function(){
    Hash.each(this, function(value, key){
      delete this[key];
    }, this);
    return this;
  },

  include: function(key, value){
    var k = this[key];
    if (k == undefined) this[key] = value;
    return this;
  },

  map: function(fn, bind){
    var results = new Hash;
    Hash.each(this, function(value, key){
      results.set(key, fn.call(bind, value, key, this));
    }, this);
    return results;
  },

  filter: function(fn, bind){
    var results = new Hash;
    Hash.each(this, function(value, key){
      if (fn.call(bind, value, key, this)) results.set(key, value);
    }, this);
    return results;
  },

  every: function(fn, bind){
    for (var key in this){
      if (this.hasOwnProperty(key) && !fn.call(bind, this[key], key)) return false;
    }
    return true;
  },

  some: function(fn, bind){
    for (var key in this){
      if (this.hasOwnProperty(key) && fn.call(bind, this[key], key)) return true;
    }
    return false;
  },

  getKeys: function(){
    var keys = [];
    Hash.each(this, function(value, key){
      keys.push(key);
    });
    return keys;
  },

  getValues: function(){
    var values = [];
    Hash.each(this, function(value){
      values.push(value);
    });
    return values;
  },
  
  toQueryString: function(base){
    var queryString = [];
    Hash.each(this, function(value, key){
      if (base) key = base + '[' + key + ']';
      var result;
      switch ($type(value)){
        case 'object': result = Hash.toQueryString(value, key); break;
        case 'array':
          var qs = {};
          value.each(function(val, i){
            qs[i] = val;
          });
          result = Hash.toQueryString(qs, key);
        break;
        default: result = key + '=' + encodeURIComponent(value);
      }
      if (value != undefined) queryString.push(result);
    });
    
    return queryString.join('&');
  }

});

Hash.alias({keyOf: 'indexOf', hasValue: 'contains'});

/*
Script: Event.js
  Contains the Event Native, to make the event object completely crossbrowser.

License:
  MIT-style license.
*/

var Event = new Native({

  name: 'Event',

  initialize: function(event, win){
    win = win || window;
    var doc = win.document;
    event = event || win.event;
    if (event.$extended) return event;
    this.$extended = true;
    var type = event.type;
    var target = event.target || event.srcElement;
    while (target && target.nodeType == 3) target = target.parentNode;
    
    if (type.test(/key/)){
      var code = event.which || event.keyCode;
      var key = Event.Keys.keyOf(code);
      if (type == 'keydown'){
        var fKey = code - 111;
        if (fKey > 0 && fKey < 13) key = 'f' + fKey;
      }
      key = key || String.fromCharCode(code).toLowerCase();
    } else if (type.match(/(click|mouse|menu)/i)){
      doc = (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html : doc.body;
      var page = {
        x: event.pageX || event.clientX + doc.scrollLeft,
        y: event.pageY || event.clientY + doc.scrollTop
      };
      var client = {
        x: (event.pageX) ? event.pageX - win.pageXOffset : event.clientX,
        y: (event.pageY) ? event.pageY - win.pageYOffset : event.clientY
      };
      if (type.match(/DOMMouseScroll|mousewheel/)){
        var wheel = (event.wheelDelta) ? event.wheelDelta / 120 : -(event.detail || 0) / 3;
      }
      var rightClick = (event.which == 3) || (event.button == 2);
      var related = null;
      if (type.match(/over|out/)){
        switch (type){
          case 'mouseover': related = event.relatedTarget || event.fromElement; break;
          case 'mouseout': related = event.relatedTarget || event.toElement;
        }
        if (!(function(){
          while (related && related.nodeType == 3) related = related.parentNode;
          return true;
        }).create({attempt: Browser.Engine.gecko})()) related = false;
      }
    }

    return $extend(this, {
      event: event,
      type: type,
      
      page: page,
      client: client,
      rightClick: rightClick,
      
      wheel: wheel,
      
      relatedTarget: related,
      target: target,
      
      code: code,
      key: key,
      
      shift: event.shiftKey,
      control: event.ctrlKey,
      alt: event.altKey,
      meta: event.metaKey
    });
  }

});

Event.Keys = new Hash({
  'enter': 13,
  'up': 38,
  'down': 40,
  'left': 37,
  'right': 39,
  'esc': 27,
  'space': 32,
  'backspace': 8,
  'tab': 9,
  'delete': 46
});

Event.implement({

  stop: function(){
    return this.stopPropagation().preventDefault();
  },

  stopPropagation: function(){
    if (this.event.stopPropagation) this.event.stopPropagation();
    else this.event.cancelBubble = true;
    return this;
  },

  preventDefault: function(){
    if (this.event.preventDefault) this.event.preventDefault();
    else this.event.returnValue = false;
    return this;
  }

});

/*
Script: Class.js
  Contains the Class Function for easily creating, extending, and implementing reusable Classes.

License:
  MIT-style license.
*/

var Class = new Native({

  name: 'Class',

  initialize: function(properties){

    properties = properties || {};

    var klass = function(empty){
            
      for (var key in this) this[key] = $unlink(this[key]);

      for (var mutator in Class.Mutators){
        if (!this[mutator]) continue;
        Class.Mutators[mutator](this, this[mutator]);
        delete this[mutator];
      }

      this.constructor = klass;
      
      if (empty === $empty) return this;
      
      var self = (this.initialize) ? this.initialize.apply(this, arguments) : this;
      if (this.options && this.options.initialize) this.options.initialize.call(this);

      return self;
    };

    $extend(klass, this);
    klass.constructor = Class;
    klass.prototype = properties;
    return klass;
  }

});

Class.implement({

  implement: function(){
    Class.Mutators.Implements(this.prototype, Array.slice(arguments));
    return this;
  }

});

Class.Mutators = {};

Class.Mutators.Implements = function(self, klasses){
  $splat(klasses).each(function(klass){
    $extend(self, ($type(klass) == 'class') ? new klass($empty) : klass);
  });
};

Class.Mutators.Extends = function(self, klass){
  
  var instance = new klass($empty);
  
  delete instance.parent;
  delete instance.parentOf;
  
  for (var key in instance){

    var current = self[key], previous = instance[key];
    
    if (current == undefined){
      self[key] = previous;
      continue;
    }

    var ctype = $type(current), ptype = $type(previous);
    
    if (ctype != ptype) continue;
    
    switch (ctype){
      case 'function': 
      
        // opera does not support function.caller, so we replace the function code with brute force. Not pretty, but its just for opera.
        // if future opera versions will support function.caller, this code wont be executed anymore.
        // this code will be only executed if the current browser does not support function.caller (only opera).
        // there is also a fix for an opera bug where in the function string, parentheses around numbers are ignored, and an error is thrown.
        
        if (!arguments.callee.caller) self[key] = eval('(' + String(current).replace(/\bthis\.parent\(\s*(\))?/g, function(full, close){
          return 'arguments.callee._parent_.call(this' + (close || ', ');
        }).replace(/(\d+)\.([A-Za-z_])/g, '($1).$2') + ')');
        
        // end "opera" code
      
        self[key]._parent_ = previous;
      break;
      case 'object': self[key] = $merge(previous, current);
    }
    
  }
  
  self.parent = function(){
    return arguments.callee.caller._parent_.apply(this, arguments);
  };
  
  self.parentOf = function(descendant){
    return descendant._parent_.apply(this, Array.slice(arguments, 1));
  };

};

/*
Script: Class.Extras.js
  Contains Utility Classes that can be implemented into your own Classes to ease the execution of many common tasks.

License:
  MIT-style license.
*/

var Chain = new Class({

  chain: function(){
    this.$chain = (this.$chain || []).extend(arguments);
    return this;
  },

  callChain: function(){
    return (this.$chain && this.$chain.length) ? this.$chain.shift().apply(this, arguments) : false;
  },

  clearChain: function(){
    if (this.$chain) this.$chain.empty();
    return this;
  }

});

var Events = new Class({

  addEvent: function(type, fn, internal){
    if (fn != $empty){
      this.$events = this.$events || {};
      this.$events[type] = this.$events[type] || [];
      this.$events[type].include(fn);
      if (internal) fn.internal = true;
    }
    return this;
  },

  addEvents: function(events){
    for (var type in events) this.addEvent(type, events[type]);
    return this;
  },

  fireEvent: function(type, args, delay){
    if (!this.$events || !this.$events[type]) return this;
    this.$events[type].each(function(fn){
      fn.create({'bind': this, 'delay': delay, 'arguments': args})();
    }, this);
    return this;
  },

  removeEvent: function(type, fn){
    if (!this.$events || !this.$events[type]) return this;
    if (!fn.internal) this.$events[type].erase(fn);
    return this;
  },

  removeEvents: function(type){
    for (var e in this.$events){
      if (type && type != e) continue;
      var fns = this.$events[e];
      for (var i = fns.length; i--; i) this.removeEvent(e, fns[i]);
    }
    return this;
  }

});

var Options = new Class({

  setOptions: function(){
    this.options = $merge.run([this.options].extend(arguments));
    if (!this.addEvent) return this;
    for (var option in this.options){
      if ($type(this.options[option]) != 'function' || !(/^on[A-Z]/).test(option)) continue;
      this.addEvent(option, this.options[option]);
      delete this.options[option];
    }
    return this;
  }

});

/*
Script: Element.js
  One of the most important items in MooTools. Contains the dollar function, the dollars function, and an handful of cross-browser,
  time-saver methods to let you easily work with HTML Elements.

License:
  MIT-style license.
*/

Document.implement({

  newElement: function(tag, props){
    if (Browser.Engine.trident && props){
      ['name', 'type', 'checked'].each(function(attribute){
        if (!props[attribute]) return;
        tag += ' ' + attribute + '="' + props[attribute] + '"';
        if (attribute != 'checked') delete props[attribute];
      });
      tag = '<' + tag + '>';
    }
    return $.element(this.createElement(tag)).set(props);
  },

  newTextNode: function(text){
    return this.createTextNode(text);
  },

  getDocument: function(){
    return this;
  },

  getWindow: function(){
    return this.defaultView || this.parentWindow;
  },

  purge: function(){
    var elements = this.getElementsByTagName('*');
    for (var i = 0, l = elements.length; i < l; i++) Browser.freeMem(elements[i]);
  }

});

var Element = new Native({

  name: 'Element',

  legacy: window.Element,

  initialize: function(tag, props){
    var konstructor = Element.Constructors.get(tag);
    if (konstructor) return konstructor(props);
    if (typeof tag == 'string') return document.newElement(tag, props);
    return $(tag).set(props);
  },

  afterImplement: function(key, value){
    if (!Array[key]) Elements.implement(key, Elements.multi(key));
    Element.Prototype[key] = value;
  }

});

Element.Prototype = {$family: {name: 'element'}};

Element.Constructors = new Hash;

var IFrame = new Native({

  name: 'IFrame',

  generics: false,

  initialize: function(){
    var params = Array.link(arguments, {properties: Object.type, iframe: $defined});
    var props = params.properties || {};
    var iframe = $(params.iframe) || false;
    var onload = props.onload || $empty;
    delete props.onload;
    props.id = props.name = $pick(props.id, props.name, iframe.id, iframe.name, 'IFrame_' + $time());
    iframe = new Element(iframe || 'iframe', props);
    var onFrameLoad = function(){
      var host = $try(function(){
        return iframe.contentWindow.location.host;
      });
      if (host && host == window.location.host){
        var win = new Window(iframe.contentWindow);
        var doc = new Document(iframe.contentWindow.document);
        $extend(win.Element.prototype, Element.Prototype);
      }
      onload.call(iframe.contentWindow, iframe.contentWindow.document);
    };
    (!window.frames[props.id]) ? iframe.addListener('load', onFrameLoad) : onFrameLoad();
    return iframe;
  }

});

var Elements = new Native({

  initialize: function(elements, options){
    options = $extend({ddup: true, cash: true}, options);
    elements = elements || [];
    if (options.ddup || options.cash){
      var uniques = {}, returned = [];
      for (var i = 0, l = elements.length; i < l; i++){
        var el = $.element(elements[i], !options.cash);
        if (options.ddup){
          if (uniques[el.uid]) continue;
          uniques[el.uid] = true;
        }
        returned.push(el);
      }
      elements = returned;
    }
    return (options.cash) ? $extend(elements, this) : elements;
  }

});

Elements.implement({

  filter: function(filter, bind){
    if (!filter) return this;
    return new Elements(Array.filter(this, (typeof filter == 'string') ? function(item){
      return item.match(filter);
    } : filter, bind));
  }

});

Elements.multi = function(property){
  return function(){
    var items = [];
    var elements = true;
    for (var i = 0, j = this.length; i < j; i++){
      var returns = this[i][property].apply(this[i], arguments);
      items.push(returns);
      if (elements) elements = ($type(returns) == 'element');
    }
    return (elements) ? new Elements(items) : items;
  };
};

Window.implement({

  $: function(el, nocash){
    if (el && el.$family && el.uid) return el;
    var type = $type(el);
    return ($[type]) ? $[type](el, nocash, this.document) : null;
  },

  $$: function(selector){
    if (arguments.length == 1 && typeof selector == 'string') return this.document.getElements(selector);
    var elements = [];
    var args = Array.flatten(arguments);
    for (var i = 0, l = args.length; i < l; i++){
      var item = args[i];
      switch ($type(item)){
        case 'element': item = [item]; break;
        case 'string': item = this.document.getElements(item, true); break;
        default: item = false;
      }
      if (item) elements.extend(item);
    }
    return new Elements(elements);
  },

  getDocument: function(){
    return this.document;
  },

  getWindow: function(){
    return this;
  }

});

$.string = function(id, nocash, doc){
  id = doc.getElementById(id);
  return (id) ? $.element(id, nocash) : null;
};

$.element = function(el, nocash){
  $uid(el);
  if (!nocash && !el.$family && !(/^object|embed$/i).test(el.tagName)){
    var proto = Element.Prototype;
    for (var p in proto) el[p] = proto[p];
  };
  return el;
};

$.object = function(obj, nocash, doc){
  if (obj.toElement) return $.element(obj.toElement(doc), nocash);
  return null;
};

$.textnode = $.whitespace = $.window = $.document = $arguments(0);

Native.implement([Element, Document], {

  getElement: function(selector, nocash){
    return $(this.getElements(selector, true)[0] || null, nocash);
  },

  getElements: function(tags, nocash){
    tags = tags.split(',');
    var elements = [];
    var ddup = (tags.length > 1);
    tags.each(function(tag){
      var partial = this.getElementsByTagName(tag.trim());
      (ddup) ? elements.extend(partial) : elements = partial;
    }, this);
    return new Elements(elements, {ddup: ddup, cash: !nocash});
  }

});

Element.Storage = {

  get: function(uid){
    return (this[uid] || (this[uid] = {}));
  }

};

Element.Inserters = new Hash({

  before: function(context, element){
    if (element.parentNode) element.parentNode.insertBefore(context, element);
  },

  after: function(context, element){
    if (!element.parentNode) return;
    var next = element.nextSibling;
    (next) ? element.parentNode.insertBefore(context, next) : element.parentNode.appendChild(context);
  },

  bottom: function(context, element){
    element.appendChild(context);
  },

  top: function(context, element){
    var first = element.firstChild;
    (first) ? element.insertBefore(context, first) : element.appendChild(context);
  }

});

Element.Inserters.inside = Element.Inserters.bottom;

Element.Inserters.each(function(value, key){

  var Key = key.capitalize();

  Element.implement('inject' + Key, function(el){
    value(this, $(el, true));
    return this;
  });

  Element.implement('grab' + Key, function(el){
    value($(el, true), this);
    return this;
  });

});

Element.implement({

  getDocument: function(){
    return this.ownerDocument;
  },

  getWindow: function(){
    return this.ownerDocument.getWindow();
  },

  getElementById: function(id, nocash){
    var el = this.ownerDocument.getElementById(id);
    if (!el) return null;
    for (var parent = el.parentNode; parent != this; parent = parent.parentNode){
      if (!parent) return null;
    }
    return $.element(el, nocash);
  },

  set: function(prop, value){
    switch ($type(prop)){
      case 'object':
        for (var p in prop) this.set(p, prop[p]);
        break;
      case 'string':
        var property = Element.Properties.get(prop);
        (property && property.set) ? property.set.apply(this, Array.slice(arguments, 1)) : this.setProperty(prop, value);
    }
    return this;
  },

  get: function(prop){
    var property = Element.Properties.get(prop);
    return (property && property.get) ? property.get.apply(this, Array.slice(arguments, 1)) : this.getProperty(prop);
  },

  erase: function(prop){
    var property = Element.Properties.get(prop);
    (property && property.erase) ? property.erase.apply(this, Array.slice(arguments, 1)) : this.removeProperty(prop);
    return this;
  },

  match: function(tag){
    return (!tag || Element.get(this, 'tag') == tag);
  },

  inject: function(el, where){
    Element.Inserters.get(where || 'bottom')(this, $(el, true));
    return this;
  },

  wraps: function(el, where){
    el = $(el, true);
    return this.replaces(el).grab(el, where);
  },

  grab: function(el, where){
    Element.Inserters.get(where || 'bottom')($(el, true), this);
    return this;
  },

  appendText: function(text, where){
    return this.grab(this.getDocument().newTextNode(text), where);
  },

  adopt: function(){
    Array.flatten(arguments).each(function(element){
      element = $(element, true);
      if (element) this.appendChild(element);
    }, this);
    return this;
  },

  dispose: function(){
    return (this.parentNode) ? this.parentNode.removeChild(this) : this;
  },

  clone: function(contents, keepid){
    switch ($type(this)){
      case 'element':
        var attributes = {};
        for (var j = 0, l = this.attributes.length; j < l; j++){
          var attribute = this.attributes[j], key = attribute.nodeName.toLowerCase();
          var value = (key == 'style' && this.style) ? this.style.cssText : attribute.nodeValue;
          if (!$chk(value) || key == 'uid' || (key == 'id' && !keepid)) continue;
          if (value != 'inherit' && ['string', 'number'].contains($type(value))) attributes[key] = value;
        }
        var element = new Element(this.nodeName.toLowerCase(), attributes);
        if (contents !== false){
          for (var i = 0, k = this.childNodes.length; i < k; i++){
            var child = Element.clone(this.childNodes[i], true, keepid);
            if (child) element.grab(child);
          }
        }
        return element;
      case 'textnode': return document.newTextNode(this.nodeValue);
    }
    return null;
  },

  replaces: function(el){
    el = $(el, true);
    el.parentNode.replaceChild(this, el);
    return this;
  },

  hasClass: function(className){
    return this.className.contains(className, ' ');
  },

  addClass: function(className){
    if (!this.hasClass(className)) this.className = (this.className + ' ' + className).clean();
    return this;
  },

  removeClass: function(className){
    this.className = this.className.replace(new RegExp('(^|\\s)' + className + '(?:\\s|$)'), '$1').clean();
    return this;
  },

  toggleClass: function(className){
    return this.hasClass(className) ? this.removeClass(className) : this.addClass(className);
  },

  getComputedStyle: function(property){
    if (this.currentStyle) return this.currentStyle[property.camelCase()];
    var computed = this.getWindow().getComputedStyle(this, null);
    return (computed) ? computed.getPropertyValue([property.hyphenate()]) : null;
  },

  empty: function(){
    $A(this.childNodes).each(function(node){
      Browser.freeMem(node);
      Element.empty(node);
      Element.dispose(node);
    }, this);
    return this;
  },

  destroy: function(){
    Browser.freeMem(this.empty().dispose());
    return null;
  },

  getSelected: function(){
    return new Elements($A(this.options).filter(function(option){
      return option.selected;
    }));
  },

  toQueryString: function(){
    var queryString = [];
    this.getElements('input, select, textarea').each(function(el){
      if (!el.name || el.disabled) return;
      var value = (el.tagName.toLowerCase() == 'select') ? Element.getSelected(el).map(function(opt){
        return opt.value;
      }) : ((el.type == 'radio' || el.type == 'checkbox') && !el.checked) ? null : el.value;
      $splat(value).each(function(val){
        if (val) queryString.push(el.name + '=' + encodeURIComponent(val));
      });
    });
    return queryString.join('&');
  },

  getProperty: function(attribute){
    var EA = Element.Attributes, key = EA.Props[attribute];
    var value = (key) ? this[key] : this.getAttribute(attribute, 2);
    return (EA.Bools[attribute]) ? !!value : (key) ? value : value || null;
  },

  getProperties: function(){
    var args = $A(arguments);
    return args.map(function(attr){
      return this.getProperty(attr);
    }, this).associate(args);
  },

  setProperty: function(attribute, value){
    var EA = Element.Attributes, key = EA.Props[attribute], hasValue = $defined(value);
    if (key && EA.Bools[attribute]) value = (value || !hasValue) ? true : false;
    else if (!hasValue) return this.removeProperty(attribute);
    (key) ? this[key] = value : this.setAttribute(attribute, value);
    return this;
  },

  setProperties: function(attributes){
    for (var attribute in attributes) this.setProperty(attribute, attributes[attribute]);
    return this;
  },

  removeProperty: function(attribute){
    var EA = Element.Attributes, key = EA.Props[attribute], isBool = (key && EA.Bools[attribute]);
    (key) ? this[key] = (isBool) ? false : '' : this.removeAttribute(attribute);
    return this;
  },

  removeProperties: function(){
    Array.each(arguments, this.removeProperty, this);
    return this;
  }

});

(function(){

var walk = function(element, walk, start, match, all, nocash){
  var el = element[start || walk];
  var elements = [];
  while (el){
    if (el.nodeType == 1 && (!match || Element.match(el, match))){
      elements.push(el);
      if (!all) break;
    }
    el = el[walk];
  }
  return (all) ? new Elements(elements, {ddup: false, cash: !nocash}) : $(elements[0], nocash);
};

Element.implement({

  getPrevious: function(match, nocash){
    return walk(this, 'previousSibling', null, match, false, nocash);
  },

  getAllPrevious: function(match, nocash){
    return walk(this, 'previousSibling', null, match, true, nocash);
  },

  getNext: function(match, nocash){
    return walk(this, 'nextSibling', null, match, false, nocash);
  },

  getAllNext: function(match, nocash){
    return walk(this, 'nextSibling', null, match, true, nocash);
  },

  getFirst: function(match, nocash){
    return walk(this, 'nextSibling', 'firstChild', match, false, nocash);
  },

  getLast: function(match, nocash){
    return walk(this, 'previousSibling', 'lastChild', match, false, nocash);
  },

  getParent: function(match, nocash){
    return walk(this, 'parentNode', null, match, false, nocash);
  },

  getParents: function(match, nocash){
    return walk(this, 'parentNode', null, match, true, nocash);
  },

  getChildren: function(match, nocash){
    return walk(this, 'nextSibling', 'firstChild', match, true, nocash);
  },

  hasChild: function(el){
    el = $(el, true);
    return (!!el && $A(this.getElementsByTagName(el.tagName)).contains(el));
  }

});

})();

Element.Properties = new Hash;

Element.Properties.style = {

  set: function(style){
    this.style.cssText = style;
  },

  get: function(){
    return this.style.cssText;
  },

  erase: function(){
    this.style.cssText = '';
  }

};

Element.Properties.tag = {get: function(){
  return this.tagName.toLowerCase();
}};

Element.Properties.href = {get: function(){
  return (!this.href) ? null : this.href.replace(new RegExp('^' + document.location.protocol + '\/\/' + document.location.host), '');
}};

Element.Properties.html = {set: function(){
  return this.innerHTML = Array.flatten(arguments).join('');
}};

Native.implement([Element, Window, Document], {

  addListener: function(type, fn){
    if (this.addEventListener) this.addEventListener(type, fn, false);
    else this.attachEvent('on' + type, fn);
    return this;
  },

  removeListener: function(type, fn){
    if (this.removeEventListener) this.removeEventListener(type, fn, false);
    else this.detachEvent('on' + type, fn);
    return this;
  },

  retrieve: function(property, dflt){
    var storage = Element.Storage.get(this.uid);
    var prop = storage[property];
    if ($defined(dflt) && !$defined(prop)) prop = storage[property] = dflt;
    return $pick(prop);
  },

  store: function(property, value){
    var storage = Element.Storage.get(this.uid);
    storage[property] = value;
    return this;
  },

  eliminate: function(property){
    var storage = Element.Storage.get(this.uid);
    delete storage[property];
    return this;
  }

});

Element.Attributes = new Hash({
  Props: {'html': 'innerHTML', 'class': 'className', 'for': 'htmlFor', 'text': (Browser.Engine.trident) ? 'innerText' : 'textContent'},
  Bools: ['compact', 'nowrap', 'ismap', 'declare', 'noshade', 'checked', 'disabled', 'readonly', 'multiple', 'selected', 'noresize', 'defer'],
  Camels: ['value', 'accessKey', 'cellPadding', 'cellSpacing', 'colSpan', 'frameBorder', 'maxLength', 'readOnly', 'rowSpan', 'tabIndex', 'useMap']
});

Browser.freeMem = function(item){
  if (!item) return;
  if (Browser.Engine.trident && (/object/i).test(item.tagName)){
    for (var p in item){
      if (typeof item[p] == 'function') item[p] = $empty;
    }
    Element.dispose(item);
  }
  if (item.uid && item.removeEvents) item.removeEvents();
};

(function(EA){

  var EAB = EA.Bools, EAC = EA.Camels;
  EA.Bools = EAB = EAB.associate(EAB);
  Hash.extend(Hash.combine(EA.Props, EAB), EAC.associate(EAC.map(function(v){
    return v.toLowerCase();
  })));
  EA.erase('Camels');

})(Element.Attributes);

window.addListener('unload', function(){
  window.removeListener('unload', arguments.callee);
  document.purge();
  if (Browser.Engine.trident) CollectGarbage();
});

/*
Script: Element.Event.js
  Contains Element methods for dealing with events, and custom Events.

License:
  MIT-style license.
*/

Element.Properties.events = {set: function(events){
  this.addEvents(events);
}};

Native.implement([Element, Window, Document], {

  addEvent: function(type, fn){
    var events = this.retrieve('events', {});
    events[type] = events[type] || {'keys': [], 'values': []};
    if (events[type].keys.contains(fn)) return this;
    events[type].keys.push(fn);
    var realType = type, custom = Element.Events.get(type), condition = fn, self = this;
    if (custom){
      if (custom.onAdd) custom.onAdd.call(this, fn);
      if (custom.condition){
        condition = function(event){
          if (custom.condition.call(this, event)) return fn.call(this, event);
          return false;
        };
      }
      realType = custom.base || realType;
    }
    var defn = function(){
      return fn.call(self);
    };
    var nativeEvent = Element.NativeEvents[realType] || 0;
    if (nativeEvent){
      if (nativeEvent == 2){
        defn = function(event){
          event = new Event(event, self.getWindow());
          if (condition.call(self, event) === false) event.stop();
        };
      }
      this.addListener(realType, defn);
    }
    events[type].values.push(defn);
    return this;
  },

  removeEvent: function(type, fn){
    var events = this.retrieve('events');
    if (!events || !events[type]) return this;
    var pos = events[type].keys.indexOf(fn);
    if (pos == -1) return this;
    var key = events[type].keys.splice(pos, 1)[0];
    var value = events[type].values.splice(pos, 1)[0];
    var custom = Element.Events.get(type);
    if (custom){
      if (custom.onRemove) custom.onRemove.call(this, fn);
      type = custom.base || type;
    }
    return (Element.NativeEvents[type]) ? this.removeListener(type, value) : this;
  },

  addEvents: function(events){
    for (var event in events) this.addEvent(event, events[event]);
    return this;
  },

  removeEvents: function(type){
    var events = this.retrieve('events');
    if (!events) return this;
    if (!type){
      for (var evType in events) this.removeEvents(evType);
      events = null;
    } else if (events[type]){
      while (events[type].keys[0]) this.removeEvent(type, events[type].keys[0]);
      events[type] = null;
    }
    return this;
  },

  fireEvent: function(type, args, delay){
    var events = this.retrieve('events');
    if (!events || !events[type]) return this;
    events[type].keys.each(function(fn){
      fn.create({'bind': this, 'delay': delay, 'arguments': args})();
    }, this);
    return this;
  },

  cloneEvents: function(from, type){
    from = $(from);
    var fevents = from.retrieve('events');
    if (!fevents) return this;
    if (!type){
      for (var evType in fevents) this.cloneEvents(from, evType);
    } else if (fevents[type]){
      fevents[type].keys.each(function(fn){
        this.addEvent(type, fn);
      }, this);
    }
    return this;
  }

});

Element.NativeEvents = {
  click: 2, dblclick: 2, mouseup: 2, mousedown: 2, contextmenu: 2, //mouse buttons
  mousewheel: 2, DOMMouseScroll: 2, //mouse wheel
  mouseover: 2, mouseout: 2, mousemove: 2, selectstart: 2, selectend: 2, //mouse movement
  keydown: 2, keypress: 2, keyup: 2, //keyboard
  focus: 2, blur: 2, change: 2, reset: 2, select: 2, submit: 2, //form elements
  load: 1, unload: 1, beforeunload: 2, resize: 1, move: 1, DOMContentLoaded: 1, readystatechange: 1, //window
  error: 1, abort: 1, scroll: 1 //misc
};

(function(){

var $check = function(event){
  var related = event.relatedTarget;
  if (related == undefined) return true;
  if (related === false) return false;
  return ($type(this) != 'document' && related != this && related.prefix != 'xul' && !this.hasChild(related));
};

Element.Events = new Hash({

  mouseenter: {
    base: 'mouseover',
    condition: $check
  },

  mouseleave: {
    base: 'mouseout',
    condition: $check
  },

  mousewheel: {
    base: (Browser.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel'
  }

});

})();

/*
Script: Element.Style.js
  Contains methods for interacting with the styles of Elements in a fashionable way.

License:
  MIT-style license.
*/

Element.Properties.styles = {set: function(styles){
  this.setStyles(styles);
}};

Element.Properties.opacity = {

  set: function(opacity, novisibility){
    if (!novisibility){
      if (opacity == 0){
        if (this.style.visibility != 'hidden') this.style.visibility = 'hidden';
      } else {
        if (this.style.visibility != 'visible') this.style.visibility = 'visible';
      }
    }
    if (!this.currentStyle || !this.currentStyle.hasLayout) this.style.zoom = 1;
    if (Browser.Engine.trident) this.style.filter = (opacity == 1) ? '' : 'alpha(opacity=' + opacity * 100 + ')';
    this.style.opacity = opacity;
    this.store('opacity', opacity);
  },

  get: function(){
    return this.retrieve('opacity', 1);
  }

};

Element.implement({
  
  setOpacity: function(value){
    return this.set('opacity', value, true);
  },
  
  getOpacity: function(){
    return this.get('opacity');
  },

  setStyle: function(property, value){
    switch (property){
      case 'opacity': return this.set('opacity', parseFloat(value));
      case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
    }
    property = property.camelCase();
    if ($type(value) != 'string'){
      var map = (Element.Styles.get(property) || '@').split(' ');
      value = $splat(value).map(function(val, i){
        if (!map[i]) return '';
        return ($type(val) == 'number') ? map[i].replace('@', Math.round(val)) : val;
      }).join(' ');
    } else if (value == String(Number(value))){
      value = Math.round(value);
    }
    this.style[property] = value;
    return this;
  },

  getStyle: function(property){
    switch (property){
      case 'opacity': return this.get('opacity');
      case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
    }
    property = property.camelCase();
    var result = this.style[property];
    if (!$chk(result)){
      result = [];
      for (var style in Element.ShortStyles){
        if (property != style) continue;
        for (var s in Element.ShortStyles[style]) result.push(this.getStyle(s));
        return result.join(' ');
      }
      result = this.getComputedStyle(property);
    }
    if (result){
      result = String(result);
      var color = result.match(/rgba?\([\d\s,]+\)/);
      if (color) result = result.replace(color[0], color[0].rgbToHex());
    }
    if (Browser.Engine.presto || (Browser.Engine.trident && !$chk(parseInt(result)))){
      if (property.test(/^(height|width)$/)){
        var values = (property == 'width') ? ['left', 'right'] : ['top', 'bottom'], size = 0;
        values.each(function(value){
          size += this.getStyle('border-' + value + '-width').toInt() + this.getStyle('padding-' + value).toInt();
        }, this);
        return this['offset' + property.capitalize()] - size + 'px';
      }
      if (Browser.Engine.presto && String(result).test('px')) return result;
      if (property.test(/(border(.+)Width|margin|padding)/)) return '0px';
    }
    return result;
  },

  setStyles: function(styles){
    for (var style in styles) this.setStyle(style, styles[style]);
    return this;
  },

  getStyles: function(){
    var result = {};
    Array.each(arguments, function(key){
      result[key] = this.getStyle(key);
    }, this);
    return result;
  }

});

Element.Styles = new Hash({
  left: '@px', top: '@px', bottom: '@px', right: '@px',
  width: '@px', height: '@px', maxWidth: '@px', maxHeight: '@px', minWidth: '@px', minHeight: '@px',
  backgroundColor: 'rgb(@, @, @)', backgroundPosition: '@px @px', color: 'rgb(@, @, @)',
  fontSize: '@px', letterSpacing: '@px', lineHeight: '@px', clip: 'rect(@px @px @px @px)',
  margin: '@px @px @px @px', padding: '@px @px @px @px', border: '@px @ rgb(@, @, @) @px @ rgb(@, @, @) @px @ rgb(@, @, @)',
  borderWidth: '@px @px @px @px', borderStyle: '@ @ @ @', borderColor: 'rgb(@, @, @) rgb(@, @, @) rgb(@, @, @) rgb(@, @, @)',
  zIndex: '@', 'zoom': '@', fontWeight: '@', textIndent: '@px', opacity: '@'
});

Element.ShortStyles = {margin: {}, padding: {}, border: {}, borderWidth: {}, borderStyle: {}, borderColor: {}};

['Top', 'Right', 'Bottom', 'Left'].each(function(direction){
  var Short = Element.ShortStyles;
  var All = Element.Styles;
  ['margin', 'padding'].each(function(style){
    var sd = style + direction;
    Short[style][sd] = All[sd] = '@px';
  });
  var bd = 'border' + direction;
  Short.border[bd] = All[bd] = '@px @ rgb(@, @, @)';
  var bdw = bd + 'Width', bds = bd + 'Style', bdc = bd + 'Color';
  Short[bd] = {};
  Short.borderWidth[bdw] = Short[bd][bdw] = All[bdw] = '@px';
  Short.borderStyle[bds] = Short[bd][bds] = All[bds] = '@';
  Short.borderColor[bdc] = Short[bd][bdc] = All[bdc] = 'rgb(@, @, @)';
});


/*
Script: Element.Dimensions.js
  Contains methods to work with size, scroll, or positioning of Elements and the window object.

License:
  MIT-style license.

Credits:
  - Element positioning based on the [qooxdoo](http://qooxdoo.org/) code and smart browser fixes, [LGPL License](http://www.gnu.org/licenses/lgpl.html).
  - Viewport dimensions based on [YUI](http://developer.yahoo.com/yui/) code, [BSD License](http://developer.yahoo.com/yui/license.html).
*/

(function(){

Element.implement({

  scrollTo: function(x, y){
    if (isBody(this)){
      this.getWindow().scrollTo(x, y);
    } else {
      this.scrollLeft = x;
      this.scrollTop = y;
    }
    return this;
  },

  getSize: function(){
    if (isBody(this)) return this.getWindow().getSize();
    return {x: this.offsetWidth, y: this.offsetHeight};
  },

  getScrollSize: function(){
    if (isBody(this)) return this.getWindow().getScrollSize();
    return {x: this.scrollWidth, y: this.scrollHeight};
  },

  getScroll: function(){
    if (isBody(this)) return this.getWindow().getScroll();
    return {x: this.scrollLeft, y: this.scrollTop};
  },

  getScrolls: function(){
    var element = this, position = {x: 0, y: 0};
    while (element && !isBody(element)){
      position.x += element.scrollLeft;
      position.y += element.scrollTop;
      element = element.parentNode;
    }
    return position;
  },

  getOffsets: function(){
    var element = this, position = {x: 0, y: 0};
    if (isBody(this)) return position;

    while (element && !isBody(element)){
      position.x += element.offsetLeft;
      position.y += element.offsetTop;

      if (Browser.Engine.gecko){
        if (!borderBox(element)){
          position.x += leftBorder(element);
          position.y += topBorder(element);
        }
        var parent = element.parentNode;
        if (parent && styleString(parent, 'overflow') != 'visible'){
          position.x += leftBorder(parent);
          position.y += topBorder(parent);
        }
      } else if (element != this && (Browser.Engine.trident || Browser.Engine.webkit)){
        position.x += leftBorder(element);
        position.y += topBorder(element);
      }

      element = element.offsetParent;
      if (Browser.Engine.trident){
        while (element && !element.currentStyle.hasLayout) element = element.offsetParent;
      }
    }
    if (Browser.Engine.gecko && !borderBox(this)){
      position.x -= leftBorder(this);
      position.y -= topBorder(this);
    }
    return position;
  },

  getPosition: function(relative){
    if (isBody(this)) return {x: 0, y: 0};
    var offset = this.getOffsets(), scroll = this.getScrolls();
    var position = {x: offset.x - scroll.x, y: offset.y - scroll.y};
    var relativePosition = (relative && (relative = $(relative))) ? relative.getPosition() : {x: 0, y: 0};
    return {x: position.x - relativePosition.x, y: position.y - relativePosition.y};
  },

  getCoordinates: function(element){
    if (isBody(this)) return this.getWindow().getCoordinates();
    var position = this.getPosition(element), size = this.getSize();
    var obj = {left: position.x, top: position.y, width: size.x, height: size.y};
    obj.right = obj.left + obj.width;
    obj.bottom = obj.top + obj.height;
    return obj;
  },

  computePosition: function(obj){
    return {left: obj.x - styleNumber(this, 'margin-left'), top: obj.y - styleNumber(this, 'margin-top')};
  },

  position: function(obj){
    return this.setStyles(this.computePosition(obj));
  }

});

Native.implement([Document, Window], {

  getSize: function(){
    var win = this.getWindow();
    if (Browser.Engine.presto || Browser.Engine.webkit) return {x: win.innerWidth, y: win.innerHeight};
    var doc = getCompatElement(this);
    return {x: doc.clientWidth, y: doc.clientHeight};
  },

  getScroll: function(){
    var win = this.getWindow();
    var doc = getCompatElement(this);
    return {x: win.pageXOffset || doc.scrollLeft, y: win.pageYOffset || doc.scrollTop};
  },

  getScrollSize: function(){
    var doc = getCompatElement(this);
    var min = this.getSize();
    return {x: Math.max(doc.scrollWidth, min.x), y: Math.max(doc.scrollHeight, min.y)};
  },

  getPosition: function(){
    return {x: 0, y: 0};
  },

  getCoordinates: function(){
    var size = this.getSize();
    return {top: 0, left: 0, bottom: size.y, right: size.x, height: size.y, width: size.x};
  }

});

// private methods

var styleString = Element.getComputedStyle;

function styleNumber(element, style){
  return styleString(element, style).toInt() || 0;
};

function borderBox(element){
  return styleString(element, '-moz-box-sizing') == 'border-box';
};

function topBorder(element){
  return styleNumber(element, 'border-top-width');
};

function leftBorder(element){
  return styleNumber(element, 'border-left-width');
};

function isBody(element){
  return (/^(?:body|html)$/i).test(element.tagName);
};

function getCompatElement(element){
  var doc = element.getDocument();
  return (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html : doc.body;
};

})();

//aliases

Native.implement([Window, Document, Element], {

  getHeight: function(){
    return this.getSize().y;
  },

  getWidth: function(){
    return this.getSize().x;
  },

  getScrollTop: function(){
    return this.getScroll().y;
  },

  getScrollLeft: function(){
    return this.getScroll().x;
  },

  getScrollHeight: function(){
    return this.getScrollSize().y;
  },

  getScrollWidth: function(){
    return this.getScrollSize().x;
  },

  getTop: function(){
    return this.getPosition().y;
  },

  getLeft: function(){
    return this.getPosition().x;
  }

});

/*
Script: Selectors.js
  Adds advanced CSS Querying capabilities for targeting elements. Also includes pseudoselectors support.

License:
  MIT-style license.
*/

Native.implement([Document, Element], {
  
  getElements: function(expression, nocash){
    expression = expression.split(',');
    var items, local = {};
    for (var i = 0, l = expression.length; i < l; i++){
      var selector = expression[i], elements = Selectors.Utils.search(this, selector, local);
      if (i != 0 && elements.item) elements = $A(elements);
      items = (i == 0) ? elements : (items.item) ? $A(items).concat(elements) : items.concat(elements);
    }
    return new Elements(items, {ddup: (expression.length > 1), cash: !nocash});
  }
  
});

Element.implement({
  
  match: function(selector){
    if (!selector) return true;
    var tagid = Selectors.Utils.parseTagAndID(selector);
    var tag = tagid[0], id = tagid[1];
    if (!Selectors.Filters.byID(this, id) || !Selectors.Filters.byTag(this, tag)) return false;
    var parsed = Selectors.Utils.parseSelector(selector);
    return (parsed) ? Selectors.Utils.filter(this, parsed, {}) : true;
  }
  
});

var Selectors = {Cache: {nth: {}, parsed: {}}};

Selectors.RegExps = {
  id: (/#([\w-]+)/),
  tag: (/^(\w+|\*)/),
  quick: (/^(\w+|\*)$/),
  splitter: (/\s*([+>~\s])\s*([a-zA-Z#.*:\[])/g),
  combined: (/\.([\w-]+)|\[(\w+)(?:([!*^$~|]?=)["']?(.*?)["']?)?\]|:([\w-]+)(?:\(["']?(.*?)?["']?\)|$)/g)
};

Selectors.Utils = {
  
  chk: function(item, uniques){
    if (!uniques) return true;
    var uid = $uid(item);
    if (!uniques[uid]) return uniques[uid] = true;
    return false;
  },
  
  parseNthArgument: function(argument){
    if (Selectors.Cache.nth[argument]) return Selectors.Cache.nth[argument];
    var parsed = argument.match(/^([+-]?\d*)?([a-z]+)?([+-]?\d*)?$/);
    if (!parsed) return false;
    var inta = parseInt(parsed[1]);
    var a = (inta || inta === 0) ? inta : 1;
    var special = parsed[2] || false;
    var b = parseInt(parsed[3]) || 0;
    if (a != 0){
      b--;
      while (b < 1) b += a;
      while (b >= a) b -= a;
    } else {
      a = b;
      special = 'index';
    }
    switch (special){
      case 'n': parsed = {a: a, b: b, special: 'n'}; break;
      case 'odd': parsed = {a: 2, b: 0, special: 'n'}; break;
      case 'even': parsed =  {a: 2, b: 1, special: 'n'}; break;
      case 'first': parsed = {a: 0, special: 'index'}; break;
      case 'last': parsed = {special: 'last-child'}; break;
      case 'only': parsed = {special: 'only-child'}; break;
      default: parsed = {a: (a - 1), special: 'index'};
    }
    
    return Selectors.Cache.nth[argument] = parsed;
  },
  
  parseSelector: function(selector){
    if (Selectors.Cache.parsed[selector]) return Selectors.Cache.parsed[selector];
    var m, parsed = {classes: [], pseudos: [], attributes: []};
    while ((m = Selectors.RegExps.combined.exec(selector))){
      var cn = m[1], an = m[2], ao = m[3], av = m[4], pn = m[5], pa = m[6];
      if (cn){
        parsed.classes.push(cn);
      } else if (pn){
        var parser = Selectors.Pseudo.get(pn);
        if (parser) parsed.pseudos.push({parser: parser, argument: pa});
        else parsed.attributes.push({name: pn, operator: '=', value: pa});
      } else if (an){
        parsed.attributes.push({name: an, operator: ao, value: av});
      }
    }
    if (!parsed.classes.length) delete parsed.classes;
    if (!parsed.attributes.length) delete parsed.attributes;
    if (!parsed.pseudos.length) delete parsed.pseudos;
    if (!parsed.classes && !parsed.attributes && !parsed.pseudos) parsed = null;
    return Selectors.Cache.parsed[selector] = parsed;
  },
  
  parseTagAndID: function(selector){
    var tag = selector.match(Selectors.RegExps.tag);
    var id = selector.match(Selectors.RegExps.id);
    return [(tag) ? tag[1] : '*', (id) ? id[1] : false];
  },
  
  filter: function(item, parsed, local){
    var i;
    if (parsed.classes){
      for (i = parsed.classes.length; i--; i){
        var cn = parsed.classes[i];
        if (!Selectors.Filters.byClass(item, cn)) return false;
      }
    }
    if (parsed.attributes){
      for (i = parsed.attributes.length; i--; i){
        var att = parsed.attributes[i];
        if (!Selectors.Filters.byAttribute(item, att.name, att.operator, att.value)) return false;
      }
    }
    if (parsed.pseudos){
      for (i = parsed.pseudos.length; i--; i){
        var psd = parsed.pseudos[i];
        if (!Selectors.Filters.byPseudo(item, psd.parser, psd.argument, local)) return false;
      }
    }
    return true;
  },
  
  getByTagAndID: function(ctx, tag, id){
    if (id){
      var item = ctx.getElementById(id, true);
      return (item && Selectors.Filters.byTag(item, tag)) ? [item] : [];
    } else {
      return ctx.getElementsByTagName(tag);
    }
  },
  
  search: function(self, expression, local){
    var splitters = [];
    
    var selectors = expression.trim().replace(Selectors.RegExps.splitter, function(m0, m1, m2){
      splitters.push(m1);
      return ':)' + m2;
    }).split(':)');
    
    var items, match, filtered, item;
    
    for (var i = 0, l = selectors.length; i < l; i++){
      
      var selector = selectors[i];
      
      if (i == 0 && Selectors.RegExps.quick.test(selector)){
        items = self.getElementsByTagName(selector);
        continue;
      }
      
      var splitter = splitters[i - 1];
      
      var tagid = Selectors.Utils.parseTagAndID(selector);
      var tag = tagid[0], id = tagid[1];

      if (i == 0){
        items = Selectors.Utils.getByTagAndID(self, tag, id);
      } else {
        var uniques = {}, found = [];
        for (var j = 0, k = items.length; j < k; j++) found = Selectors.Getters[splitter](found, items[j], tag, id, uniques);
        items = found;
      }
      
      var parsed = Selectors.Utils.parseSelector(selector);
      
      if (parsed){
        filtered = [];
        for (var m = 0, n = items.length; m < n; m++){
          item = items[m];
          if (Selectors.Utils.filter(item, parsed, local)) filtered.push(item);
        }
        items = filtered;
      }
      
    }
    
    return items;
    
  }
  
};

Selectors.Getters = {
  
  ' ': function(found, self, tag, id, uniques){
    var items = Selectors.Utils.getByTagAndID(self, tag, id);
    for (var i = 0, l = items.length; i < l; i++){
      var item = items[i];
      if (Selectors.Utils.chk(item, uniques)) found.push(item);
    }
    return found;
  },
  
  '>': function(found, self, tag, id, uniques){
    var children = Selectors.Utils.getByTagAndID(self, tag, id);
    for (var i = 0, l = children.length; i < l; i++){
      var child = children[i];
      if (child.parentNode == self && Selectors.Utils.chk(child, uniques)) found.push(child);
    }
    return found;
  },
  
  '+': function(found, self, tag, id, uniques){
    while ((self = self.nextSibling)){
      if (self.nodeType == 1){
        if (Selectors.Utils.chk(self, uniques) && Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
        break;
      }
    }
    return found;
  },
  
  '~': function(found, self, tag, id, uniques){
    
    while ((self = self.nextSibling)){
      if (self.nodeType == 1){
        if (!Selectors.Utils.chk(self, uniques)) break;
        if (Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
      } 
    }
    return found;
  }
  
};

Selectors.Filters = {
  
  byTag: function(self, tag){
    return (tag == '*' || (self.tagName && self.tagName.toLowerCase() == tag));
  },
  
  byID: function(self, id){
    return (!id || (self.id && self.id == id));
  },
  
  byClass: function(self, klass){
    return (self.className && self.className.contains(klass, ' '));
  },
  
  byPseudo: function(self, parser, argument, local){
    return parser.call(self, argument, local);
  },
  
  byAttribute: function(self, name, operator, value){
    var result = Element.prototype.getProperty.call(self, name);
    if (!result) return false;
    if (!operator || value == undefined) return true;
    switch (operator){
      case '=': return (result == value);
      case '*=': return (result.contains(value));
      case '^=': return (result.substr(0, value.length) == value);
      case '$=': return (result.substr(result.length - value.length) == value);
      case '!=': return (result != value);
      case '~=': return result.contains(value, ' ');
      case '|=': return result.contains(value, '-');
    }
    return false;
  }
  
};

Selectors.Pseudo = new Hash({
  
  // w3c pseudo selectors
  
  empty: function(){
    return !(this.innerText || this.textContent || '').length;
  },
  
  not: function(selector){
    return !Element.match(this, selector);
  },
  
  contains: function(text){
    return (this.innerText || this.textContent || '').contains(text);
  },
  
  'first-child': function(){
    return Selectors.Pseudo.index.call(this, 0);
  },
  
  'last-child': function(){
    var element = this;
    while ((element = element.nextSibling)){
      if (element.nodeType == 1) return false;
    }
    return true;
  },
  
  'only-child': function(){
    var prev = this;
    while ((prev = prev.previousSibling)){
      if (prev.nodeType == 1) return false;
    }
    var next = this;
    while ((next = next.nextSibling)){
      if (next.nodeType == 1) return false;
    }
    return true;
  },
  
  'nth-child': function(argument, local){
    argument = (argument == undefined) ? 'n' : argument;
    var parsed = Selectors.Utils.parseNthArgument(argument);
    if (parsed.special != 'n') return Selectors.Pseudo[parsed.special].call(this, parsed.a, local);
    var count = 0;
    local.positions = local.positions || {};
    var uid = $uid(this);
    if (!local.positions[uid]){
      var self = this;
      while ((self = self.previousSibling)){
        if (self.nodeType != 1) continue;
        count ++;
        var position = local.positions[$uid(self)];
        if (position != undefined){
          count = position + count;
          break;
        }
      }
      local.positions[uid] = count;
    }
    return (local.positions[uid] % parsed.a == parsed.b);
  },
  
  // custom pseudo selectors
  
  index: function(index){
    var element = this, count = 0;
    while ((element = element.previousSibling)){
      if (element.nodeType == 1 && ++count > index) return false;
    }
    return (count == index);
  },
  
  even: function(argument, local){
    return Selectors.Pseudo['nth-child'].call(this, '2n+1', local);
  },

  odd: function(argument, local){
    return Selectors.Pseudo['nth-child'].call(this, '2n', local);
  }
  
});

/*
Script: Domready.js
  Contains the domready custom event.

License:
  MIT-style license.
*/

Element.Events.domready = {

  onAdd: function(fn){
    if (Browser.loaded) fn.call(this);
  }

};

(function(){
  
  var domready = function(){
    if (Browser.loaded) return;
    Browser.loaded = true;
    window.fireEvent('domready');
    document.fireEvent('domready');
  };
  
  switch (Browser.Engine.name){

    case 'webkit': (function(){
      (['loaded', 'complete'].contains(document.readyState)) ? domready() : arguments.callee.delay(50);
    })(); break;

    case 'trident':
      var temp = document.createElement('div');
      (function(){
        ($try(function(){
          temp.doScroll('left');
          return $(temp).inject(document.body).set('html', 'temp').dispose();
        })) ? domready() : arguments.callee.delay(50);
      })();
    break;
    
    default:
      window.addEvent('load', domready);
      document.addEvent('DOMContentLoaded', domready);

  }
  
})();

/*
Script: JSON.js
  JSON encoder and decoder.

License:
  MIT-style license.

See Also:
  <http://www.json.org/>
*/

var JSON = new Hash({

  encode: function(obj){
    switch ($type(obj)){
      case 'string':
        return '"' + obj.replace(/[\x00-\x1f\\"]/g, JSON.$replaceChars) + '"';
      case 'array':
        return '[' + String(obj.map(JSON.encode).filter($defined)) + ']';
      case 'object': case 'hash':
        var string = [];
        Hash.each(obj, function(value, key){
          var json = JSON.encode(value);
          if (json) string.push(JSON.encode(key) + ':' + json);
        });
        return '{' + string + '}';
      case 'number': case 'boolean': return String(obj);
      case false: return 'null';
    }
    return null;
  },

  $specialChars: {'\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"' : '\\"', '\\': '\\\\'},

  $replaceChars: function(chr){
    return JSON.$specialChars[chr] || '\\u00' + Math.floor(chr.charCodeAt() / 16).toString(16) + (chr.charCodeAt() % 16).toString(16);
  },

  decode: function(string, secure){
    if ($type(string) != 'string' || !string.length) return null;
    if (secure && !(/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(string.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, ''))) return null;
    return eval('(' + string + ')');
  }

});

Native.implement([Hash, Array, String, Number], {

  toJSON: function(){
    return JSON.encode(this);
  }

});


/*
Script: Cookie.js
  Class for creating, loading, and saving browser Cookies.

License:
  MIT-style license.

Credits:
  Based on the functions by Peter-Paul Koch (http://quirksmode.org).
*/

var Cookie = new Class({

  Implements: Options,

  options: {
    path: false,
    domain: false,
    duration: false,
    secure: false,
    document: document
  },

  initialize: function(key, options){
    this.key = key;
    this.setOptions(options);
  },

  write: function(value){
    value = encodeURIComponent(value);
    if (this.options.domain) value += '; domain=' + this.options.domain;
    if (this.options.path) value += '; path=' + this.options.path;
    if (this.options.duration){
      var date = new Date();
      date.setTime(date.getTime() + this.options.duration * 24 * 60 * 60 * 1000);
      value += '; expires=' + date.toGMTString();
    }
    if (this.options.secure) value += '; secure';
    this.options.document.cookie = this.key + '=' + value;
    return this;
  },

  read: function(){
    var value = this.options.document.cookie.match('(?:^|;)\\s*' + this.key.escapeRegExp() + '=([^;]*)');
    return (value) ? decodeURIComponent(value[1]) : null;
  },

  dispose: function(){
    new Cookie(this.key, $merge(this.options, {duration: -1})).write('');
    return this;
  }

});

Cookie.write = function(key, value, options){
  return new Cookie(key, options).write(value);
};

Cookie.read = function(key){
  return new Cookie(key).read();
};

Cookie.dispose = function(key, options){
  return new Cookie(key, options).dispose();
};

/*
Script: Swiff.js
  Wrapper for embedding SWF movies. Supports (and fixes) External Interface Communication.

License:
  MIT-style license.

Credits:
  Flash detection & Internet Explorer + Flash Player 9 fix inspired by SWFObject.
*/

var Swiff = new Class({

  Implements: [Options],

  options: {
    id: null,
    height: 1,
    width: 1,
    container: null,
    properties: {},
    params: {
      quality: 'high',
      allowScriptAccess: 'always',
      wMode: 'transparent',
      swLiveConnect: true
    },
    callBacks: {},
    vars: {}
  },

  toElement: function(){
    return this.object;
  },

  initialize: function(path, options){
    this.instance = 'Swiff_' + $time();

    this.setOptions(options);
    options = this.options;
    var id = this.id = options.id || this.instance;
    var container = $(options.container);

    Swiff.CallBacks[this.instance] = {};

    var params = options.params, vars = options.vars, callBacks = options.callBacks;
    var properties = $extend({height: options.height, width: options.width}, options.properties);

    var self = this;

    for (var callBack in callBacks){
      Swiff.CallBacks[this.instance][callBack] = (function(option){
        return function(){
          return option.apply(self.object, arguments);
        };
      })(callBacks[callBack]);
      vars[callBack] = 'Swiff.CallBacks.' + this.instance + '.' + callBack;
    }

    params.flashVars = Hash.toQueryString(vars);
    if (Browser.Engine.trident){
      properties.classid = 'clsid:D27CDB6E-AE6D-11cf-96B8-444553540000';
      params.movie = path;
    } else {
      properties.type = 'application/x-shockwave-flash';
      properties.data = path;
    }
    var build = '<object id="' + id + '"';
    for (var property in properties) build += ' ' + property + '="' + properties[property] + '"';
    build += '>';
    for (var param in params){
      if (params[param]) build += '<param name="' + param + '" value="' + params[param] + '" />';
    }
    build += '</object>';
    this.object =  ((container) ? container.empty() : new Element('div')).set('html', build).firstChild;
  },

  replaces: function(element){
    element = $(element, true);
    element.parentNode.replaceChild(this.toElement(), element);
    return this;
  },

  inject: function(element){
    $(element, true).appendChild(this.toElement());
    return this;
  },

  remote: function(){
    return Swiff.remote.apply(Swiff, [this.toElement()].extend(arguments));
  }

});

Swiff.CallBacks = {};

Swiff.remote = function(obj, fn){
  var rs = obj.CallFunction('<invoke name="' + fn + '" returntype="javascript">' + __flash__argumentsToXML(arguments, 2) + '</invoke>');
  return eval(rs);
};

/*
Script: Fx.js
  Contains the basic animation logic to be extended by all other Fx Classes.

License:
  MIT-style license.
*/

var Fx = new Class({

  Implements: [Chain, Events, Options],

  options: {
    /*
    onStart: $empty,
    onCancel: $empty,
    onComplete: $empty,
    */
    fps: 50,
    unit: false,
    duration: 500,
    link: 'ignore',
    transition: function(p){
      return -(Math.cos(Math.PI * p) - 1) / 2;
    }
  },

  initialize: function(options){
    this.subject = this.subject || this;
    this.setOptions(options);
    this.options.duration = Fx.Durations[this.options.duration] || this.options.duration.toInt();
    var wait = this.options.wait;
    if (wait === false) this.options.link = 'cancel';
  },

  step: function(){
    var time = $time();
    if (time < this.time + this.options.duration){
      var delta = this.options.transition((time - this.time) / this.options.duration);
      this.set(this.compute(this.from, this.to, delta));
    } else {
      this.set(this.compute(this.from, this.to, 1));
      this.complete();
    }
  },

  set: function(now){
    return now;
  },

  compute: function(from, to, delta){
    return Fx.compute(from, to, delta);
  },

  check: function(caller){
    if (!this.timer) return true;
    switch (this.options.link){
      case 'cancel': this.cancel(); return true;
      case 'chain': this.chain(caller.bind(this, Array.slice(arguments, 1))); return false;
    }
    return false;
  },

  start: function(from, to){
    if (!this.check(arguments.callee, from, to)) return this;
    this.from = from;
    this.to = to;
    this.time = 0;
    this.startTimer();
    this.onStart();
    return this;
  },

  complete: function(){
    if (this.stopTimer()) this.onComplete();
    return this;
  },

  cancel: function(){
    if (this.stopTimer()) this.onCancel();
    return this;
  },

  onStart: function(){
    this.fireEvent('onStart', this.subject);
  },

  onComplete: function(){
    this.fireEvent('onComplete', this.subject);
    if (!this.callChain()) this.fireEvent('onChainComplete', this.subject);
  },

  onCancel: function(){
    this.fireEvent('onCancel', this.subject).clearChain();
  },

  pause: function(){
    this.stopTimer();
    return this;
  },

  resume: function(){
    this.startTimer();
    return this;
  },

  stopTimer: function(){
    if (!this.timer) return false;
    this.time = $time() - this.time;
    this.timer = $clear(this.timer);
    return true;
  },

  startTimer: function(){
    if (this.timer) return false;
    this.time = $time() - this.time;
    this.timer = this.step.periodical(Math.round(1000 / this.options.fps), this);
    return true;
  }

});

Fx.compute = function(from, to, delta){
  return (to - from) * delta + from;
};

Fx.Durations = {'short': 250, 'normal': 500, 'long': 1000};


/*
Script: Fx.CSS.js
  Contains the CSS animation logic. Used by Fx.Tween, Fx.Morph, Fx.Elements.

License:
  MIT-style license.
*/

Fx.CSS = new Class({

  Extends: Fx,

  //prepares the base from/to object

  prepare: function(element, property, values){
    values = $splat(values);
    var values1 = values[1];
    if (!$chk(values1)){
      values[1] = values[0];
      values[0] = element.getStyle(property);
    }
    var parsed = values.map(this.parse);
    return {from: parsed[0], to: parsed[1]};
  },

  //parses a value into an array

  parse: function(value){
    value = $lambda(value)();
    value = (typeof value == 'string') ? value.split(' ') : $splat(value);
    return value.map(function(val){
      val = String(val);
      var found = false;
      Fx.CSS.Parsers.each(function(parser, key){
        if (found) return;
        var parsed = parser.parse(val);
        if ($chk(parsed)) found = {value: parsed, parser: parser};
      });
      found = found || {value: val, parser: Fx.CSS.Parsers.String};
      return found;
    });
  },

  //computes by a from and to prepared objects, using their parsers.

  compute: function(from, to, delta){
    var computed = [];
    (Math.min(from.length, to.length)).times(function(i){
      computed.push({value: from[i].parser.compute(from[i].value, to[i].value, delta), parser: from[i].parser});
    });
    computed.$family = {name: 'fx:css:value'};
    return computed;
  },

  //serves the value as settable

  serve: function(value, unit){
    if ($type(value) != 'fx:css:value') value = this.parse(value);
    var returned = [];
    value.each(function(bit){
      returned = returned.concat(bit.parser.serve(bit.value, unit));
    });
    return returned;
  },

  //renders the change to an element

  render: function(element, property, value, unit){
    element.setStyle(property, this.serve(value, unit));
  },

  //searches inside the page css to find the values for a selector

  search: function(selector){
    if (Fx.CSS.Cache[selector]) return Fx.CSS.Cache[selector];
    var to = {};
    Array.each(document.styleSheets, function(sheet, j){
      var href = sheet.href;
      if (href && href.contains('://') && !href.contains(document.domain)) return;
      var rules = sheet.rules || sheet.cssRules;
      Array.each(rules, function(rule, i){
        if (!rule.style) return;
        var selectorText = (rule.selectorText) ? rule.selectorText.replace(/^\w+/, function(m){
          return m.toLowerCase();
        }) : null;
        if (!selectorText || !selectorText.test('^' + selector + '$')) return;
        Element.Styles.each(function(value, style){
          if (!rule.style[style] || Element.ShortStyles[style]) return;
          value = String(rule.style[style]);
          to[style] = (value.test(/^rgb/)) ? value.rgbToHex() : value;
        });
      });
    });
    return Fx.CSS.Cache[selector] = to;
  }

});

Fx.CSS.Cache = {};

Fx.CSS.Parsers = new Hash({

  Color: {
    parse: function(value){
      if (value.match(/^#[0-9a-f]{3,6}$/i)) return value.hexToRgb(true);
      return ((value = value.match(/(\d+),\s*(\d+),\s*(\d+)/))) ? [value[1], value[2], value[3]] : false;
    },
    compute: function(from, to, delta){
      return from.map(function(value, i){
        return Math.round(Fx.compute(from[i], to[i], delta));
      });
    },
    serve: function(value){
      return value.map(Number);
    }
  },

  Number: {
    parse: parseFloat,
    compute: Fx.compute,
    serve: function(value, unit){
      return (unit) ? value + unit : value;
    }
  },

  String: {
    parse: $lambda(false),
    compute: $arguments(1),
    serve: $arguments(0)
  }

});


/*
Script: Fx.Tween.js
  Formerly Fx.Style, effect to transition any CSS property for an element.

License:
  MIT-style license.
*/

Fx.Tween = new Class({

  Extends: Fx.CSS,

  initialize: function(element, options){
    this.element = this.subject = $(element);
    this.parent(options);
  },

  set: function(property, now){
    if (arguments.length == 1){
      now = property;
      property = this.property || this.options.property;
    }
    this.render(this.element, property, now, this.options.unit);
    return this;
  },

  start: function(property, from, to){
    if (!this.check(arguments.callee, property, from, to)) return this;
    var args = Array.flatten(arguments);
    this.property = this.options.property || args.shift();
    var parsed = this.prepare(this.element, this.property, args);
    return this.parent(parsed.from, parsed.to);
  }

});

Element.Properties.tween = {

  set: function(options){
    var tween = this.retrieve('tween');
    if (tween) tween.cancel();
    return this.eliminate('tween').store('tween:options', $extend({link: 'cancel'}, options));
  },

  get: function(options){
    if (options || !this.retrieve('tween')){
      if (options || !this.retrieve('tween:options')) this.set('tween', options);
      this.store('tween', new Fx.Tween(this, this.retrieve('tween:options')));
    }
    return this.retrieve('tween');
  }

};

Element.implement({

  tween: function(property, from, to){
    this.get('tween').start(arguments);
    return this;
  },

  fade: function(how){
    var fade = this.get('tween'), o = 'opacity', toggle;
    how = $pick(how, 'toggle');
    switch (how){
      case 'in': fade.start(o, 1); break;
      case 'out': fade.start(o, 0); break;
      case 'show': fade.set(o, 1); break;
      case 'hide': fade.set(o, 0); break;
      case 'toggle':
        var flag = this.retrieve('fade:flag', this.get('opacity') == 1);
        fade.start(o, (flag) ? 0 : 1);
        this.store('fade:flag', !flag);
        toggle = true;
      break;
      default: fade.start(o, arguments);
    }
    if (!toggle) this.eliminate('fade:flag');
    return this;
  },

  highlight: function(start, end){
    if (!end){
      end = this.retrieve('highlight:original', this.getStyle('background-color'));
      end = (end == 'transparent') ? '#fff' : end;
    }
    var tween = this.get('tween');
    tween.start('background-color', start || '#ffff88', end).chain(function(){
      this.setStyle('background-color', this.retrieve('highlight:original'));
      tween.callChain();
    }.bind(this));
    return this;
  }

});


/*
Script: Fx.Morph.js
  Formerly Fx.Styles, effect to transition any number of CSS properties for an element using an object of rules, or CSS based selector rules.

License:
  MIT-style license.
*/

Fx.Morph = new Class({

  Extends: Fx.CSS,

  initialize: function(element, options){
    this.element = this.subject = $(element);
    this.parent(options);
  },

  set: function(now){
    if (typeof now == 'string') now = this.search(now);
    for (var p in now) this.render(this.element, p, now[p], this.options.unit);
    return this;
  },

  compute: function(from, to, delta){
    var now = {};
    for (var p in from) now[p] = this.parent(from[p], to[p], delta);
    return now;
  },

  start: function(properties){
    if (!this.check(arguments.callee, properties)) return this;
    if (typeof properties == 'string') properties = this.search(properties);
    var from = {}, to = {};
    for (var p in properties){
      var parsed = this.prepare(this.element, p, properties[p]);
      from[p] = parsed.from;
      to[p] = parsed.to;
    }
    return this.parent(from, to);
  }

});

Element.Properties.morph = {

  set: function(options){
    var morph = this.retrieve('morph');
    if (morph) morph.cancel();
    return this.eliminate('morph').store('morph:options', $extend({link: 'cancel'}, options));
  },

  get: function(options){
    if (options || !this.retrieve('morph')){
      if (options || !this.retrieve('morph:options')) this.set('morph', options);
      this.store('morph', new Fx.Morph(this, this.retrieve('morph:options')));
    }
    return this.retrieve('morph');
  }

};

Element.implement({

  morph: function(props){
    this.get('morph').start(props);
    return this;
  }

});

/*
Script: Fx.Transitions.js
  Contains a set of advanced transitions to be used with any of the Fx Classes.

License:
  MIT-style license.

Credits:
  Easing Equations by Robert Penner, <http://www.robertpenner.com/easing/>, modified and optimized to be used with MooTools.
*/

(function(){

  var old = Fx.prototype.initialize;

  Fx.prototype.initialize = function(options){
    old.call(this, options);
    var trans = this.options.transition;
    if (typeof trans == 'string' && (trans = trans.split(':'))){
      var base = Fx.Transitions;
      base = base[trans[0]] || base[trans[0].capitalize()];
      if (trans[1]) base = base['ease' + trans[1].capitalize() + (trans[2] ? trans[2].capitalize() : '')];
      this.options.transition = base;
    }
  };

})();

Fx.Transition = function(transition, params){
  params = $splat(params);
  return $extend(transition, {
    easeIn: function(pos){
      return transition(pos, params);
    },
    easeOut: function(pos){
      return 1 - transition(1 - pos, params);
    },
    easeInOut: function(pos){
      return (pos <= 0.5) ? transition(2 * pos, params) / 2 : (2 - transition(2 * (1 - pos), params)) / 2;
    }
  });
};

Fx.Transitions = new Hash({

  linear: $arguments(0)

});

Fx.Transitions.extend = function(transitions){
  for (var transition in transitions) Fx.Transitions[transition] = new Fx.Transition(transitions[transition]);
};

Fx.Transitions.extend({

  Pow: function(p, x){
    return Math.pow(p, x[0] || 6);
  },

  Expo: function(p){
    return Math.pow(2, 8 * (p - 1));
  },

  Circ: function(p){
    return 1 - Math.sin(Math.acos(p));
  },

  Sine: function(p){
    return 1 - Math.sin((1 - p) * Math.PI / 2);
  },

  Back: function(p, x){
    x = x[0] || 1.618;
    return Math.pow(p, 2) * ((x + 1) * p - x);
  },

  Bounce: function(p){
    var value;
    for (var a = 0, b = 1; 1; a += b, b /= 2){
      if (p >= (7 - 4 * a) / 11){
        value = - Math.pow((11 - 6 * a - 11 * p) / 4, 2) + b * b;
        break;
      }
    }
    return value;
  },

  Elastic: function(p, x){
    return Math.pow(2, 10 * --p) * Math.cos(20 * p * Math.PI * (x[0] || 1) / 3);
  }

});

['Quad', 'Cubic', 'Quart', 'Quint'].each(function(transition, i){
  Fx.Transitions[transition] = new Fx.Transition(function(p){
    return Math.pow(p, [i + 2]);
  });
});


/*
Script: Request.js
  Powerful all purpose Request Class. Uses XMLHTTPRequest.

License:
  MIT-style license.
*/

var Request = new Class({

  Implements: [Chain, Events, Options],

  options: {
    /*onRequest: $empty,
    onSuccess: $empty,
    onFailure: $empty,
    onException: $empty,*/
    url: '',
    data: '',
    headers: {
      'X-Requested-With': 'XMLHttpRequest',
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    },
    async: true,
    method: 'post',
    link: 'ignore',
    isSuccess: null,
    emulation: true,
    urlEncoded: true,
    encoding: 'utf-8',
    evalScripts: false,
    evalResponse: false
  },

  initialize: function(options){
    this.xhr = new Browser.Request();
    this.setOptions(options);
    this.options.isSuccess = this.options.isSuccess || this.isSuccess;
    this.headers = new Hash(this.options.headers);
  },

  onStateChange: function(){
    if (this.xhr.readyState != 4 || !this.running) return;
    this.running = false;
    this.status = 0;
    $try(function(){
      this.status = this.xhr.status;
    }.bind(this));
    if (this.options.isSuccess.call(this, this.status)){
      this.response = {text: this.xhr.responseText, xml: this.xhr.responseXML};
      this.success(this.response.text, this.response.xml);
    } else {
      this.response = {text: null, xml: null};
      this.failure();
    }
    this.xhr.onreadystatechange = $empty;
  },

  isSuccess: function(){
    return ((this.status >= 200) && (this.status < 300));
  },

  processScripts: function(text){
    if (this.options.evalResponse || (/(ecma|java)script/).test(this.getHeader('Content-type'))) return $exec(text);
    return text.stripScripts(this.options.evalScripts);
  },

  success: function(text, xml){
    this.onSuccess(this.processScripts(text), xml);
  },
  
  onSuccess: function(){
    this.fireEvent('onComplete', arguments).fireEvent('onSuccess', arguments).callChain();
  },
  
  failure: function(){
    this.onFailure();
  },

  onFailure: function(){
    this.fireEvent('onComplete').fireEvent('onFailure', this.xhr);
  },

  setHeader: function(name, value){
    this.headers.set(name, value);
    return this;
  },

  getHeader: function(name){
    return $try(function(){
      return this.xhr.getResponseHeader(name);
    }.bind(this));
  },

  check: function(caller){
    if (!this.running) return true;
    switch (this.options.link){
      case 'cancel': this.cancel(); return true;
      case 'chain': this.chain(caller.bind(this, Array.slice(arguments, 1))); return false;
    }
    return false;
  },

  send: function(options){
    if (!this.check(arguments.callee, options)) return this;
    this.running = true;

    var type = $type(options);
    if (type == 'string' || type == 'element') options = {data: options};

    var old = this.options;
    options = $extend({data: old.data, url: old.url, method: old.method}, options);
    var data = options.data, url = options.url, method = options.method;

    switch ($type(data)){
      case 'element': data = $(data).toQueryString(); break;
      case 'object': case 'hash': data = Hash.toQueryString(data);
    }

    if (this.options.emulation && ['put', 'delete'].contains(method)){
      var _method = '_method=' + method;
      data = (data) ? _method + '&' + data : _method;
      method = 'post';
    }

    if (this.options.urlEncoded && method == 'post'){
      var encoding = (this.options.encoding) ? '; charset=' + this.options.encoding : '';
      this.headers.set('Content-type', 'application/x-www-form-urlencoded' + encoding);
    }

    if (data && method == 'get'){
      url = url + (url.contains('?') ? '&' : '?') + data;
      data = null;
    }

    this.xhr.open(method.toUpperCase(), url, this.options.async);

    this.xhr.onreadystatechange = this.onStateChange.bind(this);

    this.headers.each(function(value, key){
      if (!$try(function(){
        this.xhr.setRequestHeader(key, value);
        return true;
      }.bind(this))) this.fireEvent('onException', [key, value]);
    }, this);

    this.fireEvent('onRequest');
    this.xhr.send(data);
    if (!this.options.async) this.onStateChange();
    return this;
  },

  cancel: function(){
    if (!this.running) return this;
    this.running = false;
    this.xhr.abort();
    this.xhr.onreadystatechange = $empty;
    this.xhr = new Browser.Request();
    this.fireEvent('onCancel');
    return this;
  }

});

(function(){

var methods = {};
['get', 'post', 'GET', 'POST', 'PUT', 'DELETE'].each(function(method){
  methods[method] = function(){
    var params = Array.link(arguments, {url: String.type, data: $defined});
    return this.send($extend(params, {method: method.toLowerCase()}));
  };
});

Request.implement(methods);

})();

Element.Properties.send = {
  
  set: function(options){
    var send = this.retrieve('send');
    if (send) send.cancel();
    return this.eliminate('send').store('send:options', $extend({
      data: this, link: 'cancel', method: this.get('method') || 'post', url: this.get('action')
    }, options));
  },

  get: function(options){
    if (options || !this.retrieve('send')){
      if (options || !this.retrieve('send:options')) this.set('send', options);
      this.store('send', new Request(this.retrieve('send:options')));
    }
    return this.retrieve('send');
  }

};

Element.implement({

  send: function(url){
    var sender = this.get('send');
    sender.send({data: this, url: url || sender.options.url});
    return this;
  }

});


/*
Script: Request.HTML.js
  Extends the basic Request Class with additional methods for interacting with HTML responses.

License:
  MIT-style license.
*/

Request.HTML = new Class({

  Extends: Request,

  options: {
    update: false,
    evalScripts: true,
    filter: false
  },

  processHTML: function(text){
    var match = text.match(/<body[^>]*>([\s\S]*?)<\/body>/i);
    text = (match) ? match[1] : text;
    
    var container = new Element('div');
    
    return $try(function(){
      var root = '<root>' + text + '</root>', doc;
      if (Browser.Engine.trident){
        doc = new ActiveXObject('Microsoft.XMLDOM');
        doc.async = false;
        doc.loadXML(root);
      } else {
        doc = new DOMParser().parseFromString(root, 'text/xml');
      }
      root = doc.getElementsByTagName('root')[0];
      for (var i = 0, k = root.childNodes.length; i < k; i++){
        var child = Element.clone(root.childNodes[i], true, true);
        if (child) container.grab(child);
      }
      return container;
    }) || container.set('html', text);
  },

  success: function(text){
    var options = this.options, response = this.response;
    
    response.html = text.stripScripts(function(script){
      response.javascript = script;
    });
    
    var temp = this.processHTML(response.html);
    
    response.tree = temp.childNodes;
    response.elements = temp.getElements('*');
    
    if (options.filter) response.tree = response.elements.filter(options.filter);
    if (options.update) $(options.update).empty().adopt(response.tree);
    if (options.evalScripts) $exec(response.javascript);
    
    this.onSuccess(response.tree, response.elements, response.html, response.javascript);
  }

});

Element.Properties.load = {
  
  set: function(options){
    var load = this.retrieve('load');
    if (load) send.cancel();
    return this.eliminate('load').store('load:options', $extend({data: this, link: 'cancel', update: this, method: 'get'}, options));
  },

  get: function(options){
    if (options || ! this.retrieve('load')){
      if (options || !this.retrieve('load:options')) this.set('load', options);
      this.store('load', new Request.HTML(this.retrieve('load:options')));
    }
    return this.retrieve('load');
  }

};

Element.implement({
  
  load: function(){
    this.get('load').send(Array.link(arguments, {data: Object.type, url: String.type}));
    return this;
  }

});


/*
Script: Request.JSON.js
  Extends the basic Request Class with additional methods for sending and receiving JSON data.

License:
  MIT-style license.
*/

Request.JSON = new Class({

  Extends: Request,

  options: {
    secure: true
  },

  initialize: function(options){
    this.parent(options);
    this.headers.extend({'Accept': 'application/json', 'X-Request': 'JSON'});
  },

  success: function(text){
    this.response.json = JSON.decode(text, this.options.secure);
    this.onSuccess(this.response.json, text);
  }

});

/*
Script: Fx.Slide.js
  Effect to slide an element in and out of view.

License:
  MIT-style license.
*/

Fx.Slide = new Class({

  Extends: Fx,

  options: {
    mode: 'vertical'
  },

  initialize: function(element, options){
    this.addEvent('onComplete', function(){
      this.open = (this.wrapper['offset' + this.layout.capitalize()] != 0);
      if (this.open && Browser.Engine.webkit419) this.element.dispose().inject(this.wrapper);
    }, true);
    this.element = this.subject = $(element);
    this.parent(options);
    var wrapper = this.element.retrieve('wrapper');
    this.wrapper = wrapper || new Element('div', {
      styles: $extend(this.element.getStyles('margin', 'position'), {'overflow': 'hidden'})
    }).wraps(this.element);
    this.element.store('wrapper', this.wrapper).setStyle('margin', 0);
    this.now = [];
    this.open = true;
  },

  vertical: function(){
    this.margin = 'margin-top';
    this.layout = 'height';
    this.offset = this.element.offsetHeight;
  },

  horizontal: function(){
    this.margin = 'margin-left';
    this.layout = 'width';
    this.offset = this.element.offsetWidth;
  },

  set: function(now){
    this.element.setStyle(this.margin, now[0]);
    this.wrapper.setStyle(this.layout, now[1]);
    return this;
  },

  compute: function(from, to, delta){
    var now = [];
    (2).times(function(i){
      now[i] = Fx.compute(from[i], to[i], delta);
    });
    return now;
  },

  start: function(how, mode){
    if (!this.check(arguments.callee, how, mode)) return this;
    this[mode || this.options.mode]();
    var margin = this.element.getStyle(this.margin).toInt();
    var layout = this.wrapper.getStyle(this.layout).toInt();
    var caseIn = [[margin, layout], [0, this.offset]];
    var caseOut = [[margin, layout], [-this.offset, 0]];
    var start;
    switch (how){
      case 'in': start = caseIn; break;
      case 'out': start = caseOut; break;
      case 'toggle': start = (this.wrapper['offset' + this.layout.capitalize()] == 0) ? caseIn : caseOut;
    }
    return this.parent(start[0], start[1]);
  },

  slideIn: function(mode){
    return this.start('in', mode);

  },

  slideOut: function(mode){
    return this.start('out', mode);
  },

  hide: function(mode){
    this[mode || this.options.mode]();
    this.open = false;
    return this.set([-this.offset, 0]);
  },

  show: function(mode){
    this[mode || this.options.mode]();
    this.open = true;
    return this.set([0, this.offset]);
  },

  toggle: function(mode){
    return this.start('toggle', mode);
  }

});

Element.Properties.slide = {

  set: function(options){
    var slide = this.retrieve('slide');
    if (slide) slide.cancel();
    return this.eliminate('slide').store('slide:options', $extend({link: 'cancel'}, options));
  },
  
  get: function(options){
    if (options || !this.retrieve('slide')){
      if (options || !this.retrieve('slide:options')) this.set('slide', options);
      this.store('slide', new Fx.Slide(this, this.retrieve('slide:options')));
    }
    return this.retrieve('slide');
  }

};

Element.implement({

  slide: function(how, mode){
    how = how || 'toggle';
    var slide = this.get('slide'), toggle;
    switch (how){
      case 'hide': slide.hide(mode); break;
      case 'show': slide.show(mode); break;
      case 'toggle':
        var flag = this.retrieve('slide:flag', slide.open);
        slide[(flag) ? 'slideOut' : 'slideIn'](mode);
        this.store('slide:flag', !flag);
        toggle = true;
      break;
      default: slide.start(how, mode);
    }
    if (!toggle) this.eliminate('slide:flag');
    return this;
  }

});


/*
Script: Fx.Scroll.js
  Effect to smoothly scroll any element, including the window.

License:
  MIT-style license.
*/

Fx.Scroll = new Class({

  Extends: Fx,

  options: {
    offset: {'x': 0, 'y': 0},
    wheelStops: true
  },

  initialize: function(element, options){
    this.element = this.subject = $(element);
    this.parent(options);
    var cancel = this.cancel.bind(this, false);

    if ($type(this.element) != 'element') this.element = $(this.element.getDocument().body);

    var stopper = this.element;

    if (this.options.wheelStops){
      this.addEvent('onStart', function(){
        stopper.addEvent('mousewheel', cancel);
      }, true);
      this.addEvent('onComplete', function(){
        stopper.removeEvent('mousewheel', cancel);
      }, true);
    }
  },

  set: function(){
    var now = Array.flatten(arguments);
    this.element.scrollTo(now[0], now[1]);
  },

  compute: function(from, to, delta){
    var now = [];
    (2).times(function(i){
      now.push(Fx.compute(from[i], to[i], delta));
    });
    return now;
  },

  start: function(x, y){
    if (!this.check(arguments.callee, x, y)) return this;
    var offsetSize = this.element.getSize(), scrollSize = this.element.getScrollSize();
    var scroll = this.element.getScroll(), values = {x: x, y: y};
    for (var z in values){
      var max = scrollSize[z] - offsetSize[z];
      if ($chk(values[z])) values[z] = ($type(values[z]) == 'number') ? values[z].limit(0, max) : max;
      else values[z] = scroll[z];
      values[z] += this.options.offset[z];
    }
    return this.parent([scroll.x, scroll.y], [values.x, values.y]);
  },

  toTop: function(){
    return this.start(false, 0);
  },

  toLeft: function(){
    return this.start(0, false);
  },

  toRight: function(){
    return this.start('right', false);
  },

  toBottom: function(){
    return this.start(false, 'bottom');
  },

  toElement: function(el){
    var position = $(el).getPosition(this.element);
    return this.start(position.x, position.y);
  }

});


/*
Script: Fx.Elements.js
  Effect to change any number of CSS properties of any number of Elements.

License:
  MIT-style license.
*/

Fx.Elements = new Class({

  Extends: Fx.CSS,

  initialize: function(elements, options){
    this.elements = this.subject = $$(elements);
    this.parent(options);
  },

  compute: function(from, to, delta){
    var now = {};
    for (var i in from){
      var iFrom = from[i], iTo = to[i], iNow = now[i] = {};
      for (var p in iFrom) iNow[p] = this.parent(iFrom[p], iTo[p], delta);
    }
    return now;
  },

  set: function(now){
    for (var i in now){
      var iNow = now[i];
      for (var p in iNow) this.render(this.elements[i], p, iNow[p], this.options.unit);
    }
    return this;
  },

  start: function(obj){
    if (!this.check(arguments.callee, obj)) return this;
    var from = {}, to = {};
    for (var i in obj){
      var iProps = obj[i], iFrom = from[i] = {}, iTo = to[i] = {};
      for (var p in iProps){
        var parsed = this.prepare(this.elements[i], p, iProps[p]);
        iFrom[p] = parsed.from;
        iTo[p] = parsed.to;
      }
    }
    return this.parent(from, to);
  }

});

/*
Script: Drag.js
  The base Drag Class. Can be used to drag and resize Elements using mouse events.

License:
  MIT-style license.
*/

var Drag = new Class({

  Implements: [Events, Options],

  options: {/*
    onBeforeStart: $empty,
    onStart: $empty,
    onDrag: $empty,
    onCancel: $empty,
    onComplete: $empty,*/
    snap: 6,
    unit: 'px',
    grid: false,
    style: true,
    limit: false,
    handle: false,
    invert: false,
    preventDefault: false,
    modifiers: {x: 'left', y: 'top'}
  },

  initialize: function(){
    var params = Array.link(arguments, {'options': Object.type, 'element': $defined});
    this.element = $(params.element);
    this.document = this.element.getDocument();
    this.setOptions(params.options || {});
    var htype = $type(this.options.handle);
    this.handles = (htype == 'array' || htype == 'collection') ? $$(this.options.handle) : $(this.options.handle) || this.element;
    this.mouse = {'now': {}, 'pos': {}};
    this.value = {'start': {}, 'now': {}};
    
    this.selection = (Browser.Engine.trident) ? 'selectstart' : 'mousedown';
    
    this.bound = {
      start: this.start.bind(this),
      check: this.check.bind(this),
      drag: this.drag.bind(this),
      stop: this.stop.bind(this),
      cancel: this.cancel.bind(this),
      eventStop: $lambda(false)
    };
    this.attach();
  },

  attach: function(){
    this.handles.addEvent('mousedown', this.bound.start);
    return this;
  },

  detach: function(){
    this.handles.removeEvent('mousedown', this.bound.start);
    return this;
  },

  start: function(event){
    if (this.options.preventDefault) event.preventDefault();
    this.fireEvent('onBeforeStart', this.element);
    this.mouse.start = event.page;
    var limit = this.options.limit;
    this.limit = {'x': [], 'y': []};
    for (var z in this.options.modifiers){
      if (!this.options.modifiers[z]) continue;
      if (this.options.style) this.value.now[z] = this.element.getStyle(this.options.modifiers[z]).toInt();
      else this.value.now[z] = this.element[this.options.modifiers[z]];
      if (this.options.invert) this.value.now[z] *= -1;
      this.mouse.pos[z] = event.page[z] - this.value.now[z];
      if (limit && limit[z]){
        for (var i = 2; i--; i){
          if ($chk(limit[z][i])) this.limit[z][i] = $lambda(limit[z][i])();
        }
      }
    }
    if ($type(this.options.grid) == 'number') this.options.grid = {'x': this.options.grid, 'y': this.options.grid};
    this.document.addEvents({mousemove: this.bound.check, mouseup: this.bound.cancel});
    this.document.addEvent(this.selection, this.bound.eventStop);
  },

  check: function(event){
    if (this.options.preventDefault) event.preventDefault();
    var distance = Math.round(Math.sqrt(Math.pow(event.page.x - this.mouse.start.x, 2) + Math.pow(event.page.y - this.mouse.start.y, 2)));
    if (distance > this.options.snap){
      this.cancel();
      this.document.addEvents({
        mousemove: this.bound.drag,
        mouseup: this.bound.stop
      });
      this.fireEvent('onStart', this.element).fireEvent('onSnap', this.element);
    }
  },

  drag: function(event){
    if (this.options.preventDefault) event.preventDefault();
    this.mouse.now = event.page;
    for (var z in this.options.modifiers){
      if (!this.options.modifiers[z]) continue;
      this.value.now[z] = this.mouse.now[z] - this.mouse.pos[z];
      if (this.options.invert) this.value.now[z] *= -1;
      if (this.options.limit && this.limit[z]){
        if ($chk(this.limit[z][1]) && (this.value.now[z] > this.limit[z][1])){
          this.value.now[z] = this.limit[z][1];
        } else if ($chk(this.limit[z][0]) && (this.value.now[z] < this.limit[z][0])){
          this.value.now[z] = this.limit[z][0];
        }
      }
      if (this.options.grid[z]) this.value.now[z] -= (this.value.now[z] % this.options.grid[z]);
      if (this.options.style) this.element.setStyle(this.options.modifiers[z], this.value.now[z] + this.options.unit);
      else this.element[this.options.modifiers[z]] = this.value.now[z];
    }
    this.fireEvent('onDrag', this.element);
  },

  cancel: function(event){
    this.document.removeEvent('mousemove', this.bound.check);
    this.document.removeEvent('mouseup', this.bound.cancel);
    if (event){
      this.document.removeEvent(this.selection, this.bound.eventStop);
      this.fireEvent('onCancel', this.element);
    }
  },

  stop: function(event){
    this.document.removeEvent(this.selection, this.bound.eventStop);
    this.document.removeEvent('mousemove', this.bound.drag);
    this.document.removeEvent('mouseup', this.bound.stop);
    if (event) this.fireEvent('onComplete', this.element);
  }

});

Element.implement({
  
  makeResizable: function(options){
    return new Drag(this, $merge({modifiers: {'x': 'width', 'y': 'height'}}, options));
  }

});

/*
Script: Drag.Move.js
  A Drag extension that provides support for the constraining of draggables to containers and droppables.

License:
  MIT-style license.
*/

Drag.Move = new Class({

  Extends: Drag,

  options: {
    droppables: [],
    container: false
  },

  initialize: function(element, options){
    this.parent(element, options);
    this.droppables = $$(this.options.droppables);
    this.container = $(this.options.container);
    if (this.container && $type(this.container) != 'element') this.container = $(this.container.getDocument().body);
    element = this.element;
    
    var current = element.getStyle('position');
    var position = (current != 'static') ? current : 'absolute';
    if (element.getStyle('left') == 'auto' || element.getStyle('top') == 'auto') element.position(element.getPosition(element.offsetParent));
    
    element.setStyle('position', position);
    
    this.addEvent('onStart', function(){
      this.checkDroppables();
    }, true);
  },

  start: function(event){
    if (this.container){
      var el = this.element, cont = this.container, ccoo = cont.getCoordinates(el.offsetParent), cps = {}, ems = {};

      ['top', 'right', 'bottom', 'left'].each(function(pad){
        cps[pad] = cont.getStyle('padding-' + pad).toInt();
        ems[pad] = el.getStyle('margin-' + pad).toInt();
      }, this);

      var width = el.offsetWidth + ems.left + ems.right, height = el.offsetHeight + ems.top + ems.bottom;
      var x = [ccoo.left + cps.left, ccoo.right - cps.right - width];
      var y = [ccoo.top + cps.top, ccoo.bottom - cps.bottom - height];

      this.options.limit = {x: x, y: y};
    }
    this.parent(event);
  },

  checkAgainst: function(el){
    el = el.getCoordinates();
    var now = this.mouse.now;
    return (now.x > el.left && now.x < el.right && now.y < el.bottom && now.y > el.top);
  },

  checkDroppables: function(){
    var overed = this.droppables.filter(this.checkAgainst, this).getLast();
    if (this.overed != overed){
      if (this.overed) this.fireEvent('onLeave', [this.element, this.overed]);
      if (overed){
        this.overed = overed;
        this.fireEvent('onEnter', [this.element, overed]);
      } else {
        this.overed = null;
      }
    }
  },

  drag: function(event){
    this.parent(event);
    if (this.droppables.length) this.checkDroppables();
  },

  stop: function(event){
    this.checkDroppables();
    this.fireEvent('onDrop', [this.element, this.overed]);
    this.overed = null;
    return this.parent(event);
  }

});

Element.implement({

  makeDraggable: function(options){
    return new Drag.Move(this, options);
  }

});


/*
Script: Color.js
  Class for creating and manipulating colors in JavaScript. Supports HSB -> RGB Conversions and vice versa.

License:
  MIT-style license.
*/

var Color = new Native({
  
  initialize: function(color, type){
    if (arguments.length >= 3){
      type = "rgb"; color = Array.slice(arguments, 0, 3);
    } else if (typeof color == 'string'){
      if (color.match(/rgb/)) color = color.rgbToHex().hexToRgb(true);
      else if (color.match(/hsb/)) color = color.hsbToRgb();
      else color = color.hexToRgb(true);
    }
    type = type || 'rgb';
    switch (type){
      case 'hsb':
        var old = color;
        color = color.hsbToRgb();
        color.hsb = old;
      break;
      case 'hex': color = color.hexToRgb(true); break;
    }
    color.rgb = color.slice(0, 3);
    color.hsb = color.hsb || color.rgbToHsb();
    color.hex = color.rgbToHex();
    return $extend(color, this);
  }

});

Color.implement({

  mix: function(){
    var colors = Array.slice(arguments);
    var alpha = ($type(colors.getLast()) == 'number') ? colors.pop() : 50;
    var rgb = this.slice();
    colors.each(function(color){
      color = new Color(color);
      for (var i = 0; i < 3; i++) rgb[i] = Math.round((rgb[i] / 100 * (100 - alpha)) + (color[i] / 100 * alpha));
    });
    return new Color(rgb, 'rgb');
  },

  invert: function(){
    return new Color(this.map(function(value){
      return 255 - value;
    }));
  },

  setHue: function(value){
    return new Color([value, this.hsb[1], this.hsb[2]], 'hsb');
  },

  setSaturation: function(percent){
    return new Color([this.hsb[0], percent, this.hsb[2]], 'hsb');
  },

  setBrightness: function(percent){
    return new Color([this.hsb[0], this.hsb[1], percent], 'hsb');
  }

});

function $RGB(r, g, b){
  return new Color([r, g, b], 'rgb');
};

function $HSB(h, s, b){
  return new Color([h, s, b], 'hsb');
};

function $HEX(hex){
  return new Color(hex, 'hex');
};

Array.implement({

  rgbToHsb: function(){
    var red = this[0], green = this[1], blue = this[2];
    var hue, saturation, brightness;
    var max = Math.max(red, green, blue), min = Math.min(red, green, blue);
    var delta = max - min;
    brightness = max / 255;
    saturation = (max != 0) ? delta / max : 0;
    if (saturation == 0){
      hue = 0;
    } else {
      var rr = (max - red) / delta;
      var gr = (max - green) / delta;
      var br = (max - blue) / delta;
      if (red == max) hue = br - gr;
      else if (green == max) hue = 2 + rr - br;
      else hue = 4 + gr - rr;
      hue /= 6;
      if (hue < 0) hue++;
    }
    return [Math.round(hue * 360), Math.round(saturation * 100), Math.round(brightness * 100)];
  },

  hsbToRgb: function(){
    var br = Math.round(this[2] / 100 * 255);
    if (this[1] == 0){
      return [br, br, br];
    } else {
      var hue = this[0] % 360;
      var f = hue % 60;
      var p = Math.round((this[2] * (100 - this[1])) / 10000 * 255);
      var q = Math.round((this[2] * (6000 - this[1] * f)) / 600000 * 255);
      var t = Math.round((this[2] * (6000 - this[1] * (60 - f))) / 600000 * 255);
      switch (Math.floor(hue / 60)){
        case 0: return [br, t, p];
        case 1: return [q, br, p];
        case 2: return [p, br, t];
        case 3: return [p, q, br];
        case 4: return [t, p, br];
        case 5: return [br, p, q];
      }
    }
    return false;
  }

});

String.implement({

  rgbToHsb: function(){
    var rgb = this.match(/\d{1,3}/g);
    return (rgb) ? hsb.rgbToHsb() : null;
  },
  
  hsbToRgb: function(){
    var hsb = this.match(/\d{1,3}/g);
    return (hsb) ? hsb.hsbToRgb() : null;
  }

});


/*
Script: Group.js
  Class for monitoring collections of events

License:
  MIT-style license.
*/

var Group = new Class({

  initialize: function(){
    this.instances = Array.flatten(arguments);
    this.events = {};
    this.checker = {};
  },

  addEvent: function(type, fn){
    this.checker[type] = this.checker[type] || {};
    this.events[type] = this.events[type] || [];
    if (this.events[type].contains(fn)) return false;
    else this.events[type].push(fn);
    this.instances.each(function(instance, i){
      instance.addEvent(type, this.check.bind(this, [type, instance, i]));
    }, this);
    return this;
  },

  check: function(type, instance, i){
    this.checker[type][i] = true;
    var every = this.instances.every(function(current, j){
      return this.checker[type][j] || false;
    }, this);
    if (!every) return;
    this.checker[type] = {};
    this.events[type].each(function(event){
      event.call(this, this.instances, instance);
    }, this);
  }

});


/*
Script: Hash.Cookie.js
  Class for creating, reading, and deleting Cookies in JSON format.

License:
  MIT-style license.
*/

Hash.Cookie = new Class({

  Extends: Cookie,

  options: {
    autoSave: true
  },

  initialize: function(name, options){
    this.parent(name, options);
    this.load();
  },

  save: function(){
    var value = JSON.encode(this.hash);
    if (!value || value.length > 4096) return false; //cookie would be truncated!
    if (value == '{}') this.dispose();
    else this.write(value);
    return true;
  },

  load: function(){
    this.hash = new Hash(JSON.decode(this.read(), true));
    return this;
  }

});

Hash.Cookie.implement((function(){
  
  var methods = {};
  
  Hash.each(Hash.prototype, function(method, name){
    methods[name] = function(){
      var value = method.apply(this.hash, arguments);
      if (this.options.autoSave) this.save();
      return value;
    };
  });
  
  return methods;
  
})());

/*
Script: Sortables.js
  Class for creating a drag and drop sorting interface for lists of items.

License:
  MIT-style license.
*/

var Sortables = new Class({

  Implements: [Events, Options],

  options: {/*
    onSort: $empty,
    onStart: $empty,
    onComplete: $empty,*/
    snap: 4,
    opacity: 1,
    clone: false,
    revert: false,
    handle: false,
    constrain: false
  },

  initialize: function(lists, options){
    this.setOptions(options);
    this.elements = [];
    this.lists = [];
    this.idle = true;
    
    this.addLists($$($(lists) || lists));
    if (!this.options.clone) this.options.revert = false;
    if (this.options.revert) this.effect = new Fx.Morph(null, $merge({duration: 250, link: 'cancel'}, this.options.revert));
  },

  attach: function(){
    this.addLists(this.lists);
    return this;
  },

  detach: function(){
    this.lists = this.removeLists(this.lists);
    return this;
  },

  addItems: function(){
    Array.flatten(arguments).each(function(element){
      this.elements.push(element);
      var start = element.retrieve('sortables:start', this.start.bindWithEvent(this, element));
      (this.options.handle ? element.getElement(this.options.handle) || element : element).addEvent('mousedown', start);
    }, this);
    return this;
  },

  addLists: function(){
    Array.flatten(arguments).each(function(list){
      this.lists.push(list);
      this.addItems(list.getChildren());
    }, this);
    return this;
  },

  removeItems: function(){
    var elements = [];
    Array.flatten(arguments).each(function(element){
      elements.push(element);
      this.elements.erase(element);
      var start = element.retrieve('sortables:start');
      (this.options.handle ? element.getElement(this.options.handle) || element : element).removeEvent('mousedown', start);
    }, this);
    return $$(elements);
  },

  removeLists: function(){
    var lists = [];
    Array.flatten(arguments).each(function(list){
      lists.push(list);
      this.lists.erase(list);
      this.removeItems(list.getChildren());
    }, this);
    return $$(lists);
  },

  getClone: function(event, element){
    if (!this.options.clone) return new Element('div').inject(document.body);
    if ($type(this.options.clone) == 'function') return this.options.clone.call(this, event, element, this.list);
    return element.clone(true).setStyles({
      'margin': '0px',
      'position': 'absolute',
      'visibility': 'hidden',
      'width': element.getStyle('width')
    }).inject(this.list).position(element.getPosition(element.offsetParent));
  },

  getDroppables: function(){
    var droppables = this.list.getChildren();
    if (!this.options.constrain) droppables = this.lists.concat(droppables).erase(this.list);
    return droppables.erase(this.clone).erase(this.element);
  },

  insert: function(dragging, element){
    var where = 'inside';
    if (this.lists.contains(element)){
      this.list = element;
      this.drag.droppables = this.getDroppables();
    } else {
      where = this.element.getAllPrevious().contains(element) ? 'before' : 'after';
    }
    this.element.inject(element, where);
    this.fireEvent('onSort', [this.element, this.clone]);
  },

  start: function(event, element){
    if (!this.idle) return;
    this.idle = false;
    this.element = element;
    this.opacity = element.get('opacity');
    this.list = element.getParent();
    this.clone = this.getClone(event, element);
    
    this.drag = new Drag.Move(this.clone, {
      snap: this.options.snap,
      container: this.options.constrain && this.element.getParent(),
      droppables: this.getDroppables(),
      onSnap: function(){
        event.stop();
        this.clone.setStyle('visibility', 'visible');
        this.element.set('opacity', this.options.opacity || 0);
        this.fireEvent('onStart', [this.element, this.clone]);
      }.bind(this),
      onEnter: this.insert.bind(this),
      onCancel: this.reset.bind(this),
      onComplete: this.end.bind(this)
    });
    
    this.clone.inject(this.element, 'before');
    this.drag.start(event);
  },

  end: function(){
    this.drag.detach();
    this.element.set('opacity', this.opacity);
    if (this.effect){
      var dim = this.element.getStyles('width', 'height');
      var pos = this.clone.computePosition(this.element.getPosition(this.clone.offsetParent));
      this.effect.element = this.clone;
      this.effect.start({
        top: pos.top,
        left: pos.left,
        width: dim.width,
        height: dim.height,
        opacity: 0.25
      }).chain(this.reset.bind(this));
    } else {
      this.reset();
    }
  },

  reset: function(){
    this.idle = true;
    this.clone.destroy();
    this.fireEvent('onComplete', this.element);
  },

  serialize: function(){
    var params = Array.link(arguments, {modifier: Function.type, index: $defined});
    var serial = this.lists.map(function(list){
      return list.getChildren().map(params.modifier || function(element){
        return element.get('id');
      }, this);
    }, this);
    
    var index = params.index;
    if (this.lists.length == 1) index = 0;
    return $chk(index) && index >= 0 && index < this.lists.length ? serial[index] : serial;
  }

});

/*
Script: Tips.js
  Class for creating nice tips that follow the mouse cursor when hovering an element.

License:
  MIT-style license.
*/

var Tips = new Class({

  Implements: [Events, Options],

  options: {
    onShow: function(tip){
      tip.setStyle('visibility', 'visible');
    },
    onHide: function(tip){
      tip.setStyle('visibility', 'hidden');
    },
    showDelay: 100,
    hideDelay: 100,
    className: null,
    offsets: {x: 16, y: 16},
    fixed: false
  },

  initialize: function(){
    var params = Array.link(arguments, {options: Object.type, elements: $defined});
    this.setOptions(params.options || null);
    
    this.tip = new Element('div').inject(document.body);
    
    if (this.options.className) this.tip.addClass(this.options.className);
    
    var top = new Element('div', {'class': 'tip-top'}).inject(this.tip);
    this.container = new Element('div', {'class': 'tip'}).inject(this.tip);
    var bottom = new Element('div', {'class': 'tip-bottom'}).inject(this.tip);

    this.tip.setStyles({position: 'absolute', top: 0, left: 0, visibility: 'hidden'});
    
    if (params.elements) this.attach(params.elements);
  },
  
  attach: function(elements){
    $$(elements).each(function(element){
      var title = element.retrieve('tip:title', element.get('title'));
      var text = element.retrieve('tip:text', element.get('rel') || element.get('href'));
      var enter = element.retrieve('tip:enter', this.elementEnter.bindWithEvent(this, element));
      var leave = element.retrieve('tip:leave', this.elementLeave.bindWithEvent(this, element));
      element.addEvents({mouseenter: enter, mouseleave: leave});
      if (!this.options.fixed){
        var move = element.retrieve('tip:move', this.elementMove.bindWithEvent(this, element));
        element.addEvent('mousemove', move);
      }
      element.store('tip:native', element.get('title'));
      element.erase('title');
    }, this);
    return this;
  },
  
  detach: function(elements){
    $$(elements).each(function(element){
      element.removeEvent('mouseenter', element.retrieve('tip:enter') || $empty);
      element.removeEvent('mouseleave', element.retrieve('tip:leave') || $empty);
      element.removeEvent('mousemove', element.retrieve('tip:move') || $empty);
      element.eliminate('tip:enter').eliminate('tip:leave').eliminate('tip:move');
      var original = element.retrieve('tip:native');
      if (original) element.set('title', original);
    });
    return this;
  },
  
  elementEnter: function(event, element){
    
    $A(this.container.childNodes).each(Element.dispose);
    
    var title = element.retrieve('tip:title');
    
    if (title){
      this.titleElement = new Element('div', {'class': 'tip-title'}).inject(this.container);
      this.fill(this.titleElement, title);
    }
    
    var text = element.retrieve('tip:text');
    if (text){
      this.textElement = new Element('div', {'class': 'tip-text'}).inject(this.container);
      this.fill(this.textElement, text);
    }
    
    this.timer = $clear(this.timer);
    this.timer = this.show.delay(this.options.showDelay, this);

    this.position((!this.options.fixed) ? event : {page: element.getPosition()});
  },
  
  elementLeave: function(event){
    $clear(this.timer);
    this.timer = this.hide.delay(this.options.hideDelay, this);
  },
  
  elementMove: function(event){
    this.position(event);
  },
  
  position: function(event){
    var size = window.getSize(), scroll = window.getScroll();
    var tip = {x: this.tip.offsetWidth, y: this.tip.offsetHeight};
    var props = {x: 'left', y: 'top'};
    for (var z in props){
      var pos = event.page[z] + this.options.offsets[z];
      if ((pos + tip[z] - scroll[z]) > size[z]) pos = event.page[z] - this.options.offsets[z] - tip[z];
      this.tip.setStyle(props[z], pos);
    }
  },
  
  fill: function(element, contents){
    (typeof contents == 'string') ? element.set('html', contents) : element.adopt(contents);
  },

  show: function(){
    this.fireEvent('onShow', this.tip);
  },

  hide: function(){
    this.fireEvent('onHide', this.tip);
  }

});

/*
Script: SmoothScroll.js
  Class for creating a smooth scrolling effect to all internal links on the page.

License:
  MIT-style license.
*/

var SmoothScroll = new Class({

  Extends: Fx.Scroll,

  initialize: function(options, context){
    context = context || document;
    var doc = context.getDocument(), win = context.getWindow();
    this.parent(doc, options);
    this.links = (this.options.links) ? $$(this.options.links) : $$(doc.links);
    var location = win.location.href.match(/^[^#]*/)[0] + '#';
    this.links.each(function(link){
      if (link.href.indexOf(location) != 0) return;
      var anchor = link.href.substr(location.length);
      if (anchor && $(anchor)) this.useLink(link, anchor);
    }, this);
    if (!Browser.Engine.webkit419) this.addEvent('onComplete', function(){
      win.location.hash = this.anchor;
    }, true);
  },

  useLink: function(link, anchor){
    link.addEvent('click', function(event){
      this.anchor = anchor;
      this.toElement(anchor);
      event.stop();
    }.bind(this));
  }

});

/*
Script: Slider.js
  Class for creating horizontal and vertical slider controls.

License:
  MIT-style license.
*/

var Slider = new Class({

  Implements: [Events, Options],

  options: {/*
    onChange: $empty,
    onComplete: $empty,*/
    onTick: function(position){
      if(this.options.snap) position = this.toPosition(this.step);
      this.knob.setStyle(this.property, position);
    },
    snap: false,
    offset: 0,
    range: false,
    wheel: false,
    steps: 100,
    mode: 'horizontal'
  },

  initialize: function(element, knob, options){
    this.setOptions(options);
    this.element = $(element);
    this.knob = $(knob);
    this.previousChange = this.previousEnd = this.step = -1;
    this.element.addEvent('mousedown', this.clickedElement.bind(this));
    if (this.options.wheel) this.element.addEvent('mousewheel', this.scrolledElement.bindWithEvent(this));
    var offset, limit = {}, modifiers = {'x': false, 'y': false};
    switch (this.options.mode){
      case 'vertical':
        this.axis = 'y';
        this.property = 'top';
        offset = 'offsetHeight';
        break;
      case 'horizontal':
        this.axis = 'x';
        this.property = 'left';
        offset = 'offsetWidth';
    }
    this.half = this.knob[offset] / 2;
    this.full = this.element[offset] - this.knob[offset] + (this.options.offset * 2);
    this.min = $chk(this.options.range[0]) ? this.options.range[0] : 0;
    this.max = $chk(this.options.range[1]) ? this.options.range[1] : this.options.steps;
    this.range = this.max - this.min;
    this.steps = this.options.steps || this.full;
    this.stepSize = Math.abs(this.range) / this.steps;
    this.stepWidth = this.stepSize * this.full / Math.abs(this.range) ;
    
    this.knob.setStyle('position', 'relative').setStyle(this.property, - this.options.offset);
    modifiers[this.axis] = this.property;
    limit[this.axis] = [- this.options.offset, this.full - this.options.offset];
    this.drag = new Drag(this.knob, {
      snap: 0,
      limit: limit,
      modifiers: modifiers,
      onDrag: this.draggedKnob.bind(this),
      onStart: this.draggedKnob.bind(this),
      onComplete: function(){
        this.draggedKnob();
        this.end();
      }.bind(this)
    });
    if (this.options.snap) {
      this.drag.options.grid = Math.ceil(this.stepWidth);
      this.drag.options.limit[this.axis][1] = this.full;
    }
  },

  set: function(step){
    if (!((this.range > 0) ^ (step < this.min))) step = this.min;
    if (!((this.range > 0) ^ (step > this.max))) step = this.max;
    
    this.step = Math.round(step);
    this.checkStep();
    this.end();
    this.fireEvent('onTick', this.toPosition(this.step));
    return this;
  },

  clickedElement: function(event){
    var dir = this.range < 0 ? -1 : 1;
    var position = event.page[this.axis] - this.element.getPosition()[this.axis] - this.half;
    position = position.limit(-this.options.offset, this.full -this.options.offset);
    
    this.step = Math.round(this.min + dir * this.toStep(position));
    this.checkStep();
    this.end();
    this.fireEvent('onTick', position);
  },
  
  scrolledElement: function(event){
    var mode = (this.options.mode == 'horizontal') ? (event.wheel < 0) : (event.wheel > 0);
    this.set(mode ? this.step - this.stepSize : this.step + this.stepSize);
    event.stop();
  },

  draggedKnob: function(){
    var dir = this.range < 0 ? -1 : 1;
    var position = this.drag.value.now[this.axis];
    position = position.limit(-this.options.offset, this.full -this.options.offset);
    this.step = Math.round(this.min + dir * this.toStep(position));
    this.checkStep();
  },

  checkStep: function(){
    if (this.previousChange != this.step){
      this.previousChange = this.step;
      this.fireEvent('onChange', this.step);
    }
  },

  end: function(){
    if (this.previousEnd !== this.step){
      this.previousEnd = this.step;
      this.fireEvent('onComplete', this.step + '');
    }
  },

  toStep: function(position){
    var step = (position + this.options.offset) * this.stepSize / this.full * this.steps;
    return this.options.steps ? Math.round(step -= step % this.stepSize) : step;
  },

  toPosition: function(step){
    return (this.full * Math.abs(this.min - step)) / (this.steps * this.stepSize) - this.options.offset;
  }

});

/*
Script: Scroller.js
  Class which scrolls the contents of any Element (including the window) when the mouse reaches the Element's boundaries.

License:
  MIT-style license.
*/

var Scroller = new Class({

  Implements: [Events, Options],

  options: {
    area: 20,
    velocity: 1,
    onChange: function(x, y){
      this.element.scrollTo(x, y);
    }
  },

  initialize: function(element, options){
    this.setOptions(options);
    this.element = $(element);
    this.listener = ($type(this.element) != 'element') ? $(this.element.getDocument().body) : this.element;
    this.timer = null;
  },

  start: function(){
    this.coord = this.getCoords.bind(this);
    this.listener.addEvent('mousemove', this.coord);
  },

  stop: function(){
    this.listener.removeEvent('mousemove', this.coord);
    this.timer = $clear(this.timer);
  },

  getCoords: function(event){
    this.page = (this.listener.get('tag') == 'body') ? event.client : event.page;
    if (!this.timer) this.timer = this.scroll.periodical(50, this);
  },

  scroll: function(){
    var size = this.element.getSize(), scroll = this.element.getScroll(), pos = this.element.getPosition(), change = {'x': 0, 'y': 0};
    for (var z in this.page){
      if (this.page[z] < (this.options.area + pos[z]) && scroll[z] != 0)
        change[z] = (this.page[z] - this.options.area - pos[z]) * this.options.velocity;
      else if (this.page[z] + this.options.area > (size[z] + pos[z]) && size[z] + size[z] != scroll[z])
        change[z] = (this.page[z] - size[z] + this.options.area - pos[z]) * this.options.velocity;
    }
    if (change.y || change.x) this.fireEvent('onChange', [scroll.x + change.x, scroll.y + change.y]);
  }

});

/*
Script: Assets.js
  Provides methods to dynamically load JavaScript, CSS, and Image files into the document.

License:
  MIT-style license.
*/

var Asset = new Hash({

  javascript: function(source, properties){
    properties = $extend({
      onload: $empty,
      document: document,
      check: $lambda(true)
    }, properties);
    
    var script = new Element('script', {'src': source, 'type': 'text/javascript'});
    
    var load = properties.onload.bind(script), check = properties.check, doc = properties.document;
    delete properties.onload; delete properties.check; delete properties.document;
    
    script.addEvents({
      load: load,
      readystatechange: function(){
        if (['loaded', 'complete'].contains(this.readyState)) load();
      }
    }).setProperties(properties);
    
    
    if (Browser.Engine.webkit419) var checker = (function(){
      if (!$try(check)) return;
      $clear(checker);
      load();
    }).periodical(50);
    
    return script.inject(doc.head);
  },

  css: function(source, properties){
    return new Element('link', $merge({
      'rel': 'stylesheet', 'media': 'screen', 'type': 'text/css', 'href': source
    }, properties)).inject(document.head);
  },

  image: function(source, properties){
    properties = $merge({
      'onload': $empty,
      'onabort': $empty,
      'onerror': $empty
    }, properties);
    var image = new Image();
    var element = $(image) || new Element('img');
    ['load', 'abort', 'error'].each(function(name){
      var type = 'on' + name;
      var event = properties[type];
      delete properties[type];
      image[type] = function(){
        if (!image) return;
        if (!element.parentNode){
          element.width = image.width;
          element.height = image.height;
        }
        image = image.onload = image.onabort = image.onerror = null;
        event.delay(1, element, element);
        element.fireEvent(name, element, 1);
      };
    });
    image.src = element.src = source;
    if (image && image.complete) image.onload.delay(1);
    return element.setProperties(properties);
  },

  images: function(sources, options){
    options = $merge({
      onComplete: $empty,
      onProgress: $empty
    }, options);
    if (!sources.push) sources = [sources];
    var images = [];
    var counter = 0;
    sources.each(function(source){
      var img = new Asset.image(source, {
        'onload': function(){
          options.onProgress.call(this, counter, sources.indexOf(source));
          counter++;
          if (counter == sources.length) options.onComplete();
        }
      });
      images.push(img);
    });
    return new Elements(images);
  }

});

/*
Script: Accordion.js
  An Fx.Elements extension which allows you to easily create accordion type controls.

License:
  MIT-style license.
*/

var Accordion = new Class({

  Extends: Fx.Elements,

  options: {/*
    onActive: $empty,
    onBackground: $empty,*/
    display: 0,
    show: false,
    height: true,
    width: false,
    opacity: true,
    fixedHeight: false,
    fixedWidth: false,
    wait: false,
    alwaysHide: false
  },

  initialize: function(){
    var params = Array.link(arguments, {'container': Element.type, 'options': Object.type, 'togglers': $defined, 'elements': $defined});
    this.parent(params.elements, params.options);
    this.togglers = $$(params.togglers);
    this.container = $(params.container);
    this.previous = -1;
    if (this.options.alwaysHide) this.options.wait = true;
    if ($chk(this.options.show)){
      this.options.display = false;
      this.previous = this.options.show;
    }
    if (this.options.start){
      this.options.display = false;
      this.options.show = false;
    }
    this.effects = {};
    if (this.options.opacity) this.effects.opacity = 'fullOpacity';
    if (this.options.width) this.effects.width = this.options.fixedWidth ? 'fullWidth' : 'offsetWidth';
    if (this.options.height) this.effects.height = this.options.fixedHeight ? 'fullHeight' : 'scrollHeight';
    for (var i = 0, l = this.togglers.length; i < l; i++) this.addSection(this.togglers[i], this.elements[i]);
    this.elements.each(function(el, i){
      if (this.options.show === i){
        this.fireEvent('onActive', [this.togglers[i], el]);
      } else {
        for (var fx in this.effects) el.setStyle(fx, 0);
      }
    }, this);
    if ($chk(this.options.display)) this.display(this.options.display);
  },

  addSection: function(toggler, element, pos){
    toggler = $(toggler);
    element = $(element);
    var test = this.togglers.contains(toggler);
    var len = this.togglers.length;
    this.togglers.include(toggler);
    this.elements.include(element);
    if (len && (!test || pos)){
      pos = $pick(pos, len - 1);
      toggler.inject(this.togglers[pos], 'before');
      element.inject(toggler, 'after');
    } else if (this.container && !test){
      toggler.inject(this.container);
      element.inject(this.container);
    }
    var idx = this.togglers.indexOf(toggler);
    toggler.addEvent('click', this.display.bind(this, idx));
    if (this.options.height) element.setStyles({'padding-top': 0, 'border-top': 'none', 'padding-bottom': 0, 'border-bottom': 'none'});
    if (this.options.width) element.setStyles({'padding-left': 0, 'border-left': 'none', 'padding-right': 0, 'border-right': 'none'});
    element.fullOpacity = 1;
    if (this.options.fixedWidth) element.fullWidth = this.options.fixedWidth;
    if (this.options.fixedHeight) element.fullHeight = this.options.fixedHeight;
    element.setStyle('overflow', 'hidden');
    if (!test){
      for (var fx in this.effects) element.setStyle(fx, 0);
    }
    return this;
  },

  display: function(index){
    index = ($type(index) == 'element') ? this.elements.indexOf(index) : index;
    if ((this.timer && this.options.wait) || (index === this.previous && !this.options.alwaysHide)) return this;
    this.previous = index;
    var obj = {};
    this.elements.each(function(el, i){
      obj[i] = {};
      var hide = (i != index) || (this.options.alwaysHide && (el.offsetHeight > 0));
      this.fireEvent(hide ? 'onBackground' : 'onActive', [this.togglers[i], el]);
      for (var fx in this.effects) obj[i][fx] = hide ? 0 : el[this.effects[fx]];
    }, this);
    return this.start(obj);
  }

});