/*
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': '1.2b1',
  'build': '1.2b1'
};

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(existing, property, force){
    existing = this.prototype[existing];
    if (existing) add(this, property, existing, force);
    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);
  };
};

(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 $merge(){
  var mix = {};
  for (var i = 0, l = arguments.length; i < l; i++){
    for (var key in arguments[i]){
      var ap = arguments[i][key];
      var mp = mix[key];
      if (mp && $type(ap) == 'object' && $type(mp) == 'object') mix[key] = $merge(mp, ap);
      else mix[key] = ap;
    }
  }
  return mix;
};

function $pick(){
  for (var i = 0, l = arguments.length; i < l; i++){
    if ($defined(arguments[i])) 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(fn, bind, args){
  try {
    return fn.apply(bind, $splat(args));
  } catch(e){
    return false;
  }
};

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'){
    return (obj.callee) ? 'arguments' : 'collection';
  }
  return typeof obj;
};

var Hash = new Native({

  name: 'Hash',

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

});

Hash.implement({

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

});

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 $A(iterable){
  if ($type(iterable) == 'collection'){
    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);
};


$A = function(iterable, start, length){
  if (Browser.Engine.trident && $type(iterable) == 'collection'){
    start = start || 0;
    if (start < 0) start = iterable.length + start;
    length = length || (iterable.length - start);
    var array = [];
    for (var i = 0; i < length; i++) array[i] = iterable[start++];
    return array;
  }
  start = (start || 0) + ((start < 0) ? iterable.length : 0);
  var end = ((!$chk(length)) ? iterable.length : length) + start;
  return Array.prototype.slice.call(iterable, start, end);
};

(function(){
  var natives = [Array, Function, String, RegExp, Number];
  for (var i = 0, l = natives.length; i < l; i++) natives[i].extend = natives[i].implement;
})();

/*
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|nix/i) || ['other'])[0].toLowerCase()}, 
  Features: {'xhr': !!(window.XMLHttpRequest), 'xpath': !!(document.evaluate)}
});

if (window.opera) Browser.Engine.name = 'presto';
else if (window.ActiveXObject) Browser.Engine = {'name': 'trident', 'version': (Browser.Features.xhr) ? 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';
Browser.Engine[Browser.Engine.name] = Browser.Engine[Browser.Engine.name + Browser.Engine.version] = true;
Browser.Platform[Browser.Platform.name] = true;

function $exec(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 = 0;

var Window = new Native({

  name: 'Window',

  legacy: window.Window,

  initialize: function(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]]"] : {};
    }
    win.uid = Native.UID++;
    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: window.Document,

  initialize: function(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);
    });
    doc.uid = Native.UID++;
    return $extend(doc, Document.Prototype);
  },

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

});

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

new Document(document);


window.extend = document.extend = function(properties){
  for (var property in properties) this[property] = properties[property];
};
window.extend(Browser.Engine);

window.ie = window.trident;
window.ie6 = window.trident4;
window.ie7 = window.trident5;

/*
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;
  },

  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;
  },

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

  remove: 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 = [];
    for (var i = 0; i < 3; i++){
      rgb.push(((this[i].length == 1) ? this[i] + this[i] : this[i]).toInt(16));
    }
    return array ? rgb : 'rgb(' + String(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('');
  }

});


Array.implement({

  copy: function(start, length){
    return $A(this, start, length);
  }

});

/*
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];
  },

  create: function(options){
    var self = this;
    options = options || {};
    return function(event){
      var args = options.arguments;
      args = $defined(args) ? $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));
  }

});


Function.extend({

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

});

Function.empty = $empty;

/*
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 (($type(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{2,}/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(evaluate){
    var scripts = '';
    var text = this.replace(/<script[^>]*>([\s\S]*?)<\/script>/gi, function(){
      scripts += arguments[1] + '\n';
      return '';
    });
    if (evaluate && scripts) $exec(scripts);
    return text;
  }

});


/*
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;
  },

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

  remove: 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 (!$defined(k)) 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;
  },

  getClean: function(){
    var clean = {};
    Hash.each(this, function(value, key){
      clean[key] = value;
    });
    return clean;
  },

  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(){
    var queryString = [];
    Hash.each(this, function(value, key){
      $splat(value).each(function(val){
        queryString.push(key + '=' + encodeURIComponent(val));
      });
    });
    return queryString.join('&');
  }

});

Hash.alias('keyOf', 'indexOf').alias('hasValue', 'contains').alias('remove', 'erase');


Hash.alias('getKeys', 'keys').alias('getValues', 'values').alias('has', 'hasKey');
var Abstract = Hash;

/*
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(){
      for (var property in this){
        if ($type(this[property]) == 'object') this[property] = $merge(this[property]);
      }

      ['Implements', 'Extends'].each(function(Property){
        if (!this[Property]) return;
        Class[Property](this, this[Property]);
        delete this[Property];
      }, this);

      this.constructor = klass;

      var self = (arguments[0] !== $empty && this.initialize && $type(this.initialize) == 'function') ? 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.Implements(this.prototype, Array.slice(arguments));
    return this;
  }

});

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

Class.Extends = function(self, klass){
  klass = new klass($empty);
  for (var property in klass){
    var kp = klass[property];
    var sp = self[property];
    self[property] = (function(previous, current){
      if ($defined(current) && previous != current){
        var type = $type(current);
        if (type != $type(previous)) return current;
        switch (type){
          case 'function': return function(){
            current.parent = this.parent = previous.bind(this);
            return current.apply(this, arguments);
          };
          case 'object': return $merge(previous, current);
        }
      }
      return previous;
    })(kp, sp);
  }
};

//legacy .extend support

Class.prototype.extend = function(properties){
  properties.Extends = this;
  return new Class(properties);
};

Class.empty = $empty;

/*
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(){
    if (this.$chain && this.$chain.length) this.$chain.shift().apply(this, arguments);
    return this;
  },

  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.$events) return this;
    if (this.$events && this.$events[type]){
      if (!fn.internal) this.$events[type].remove(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.
*/

var Element = new Native({

  name: 'Element',

  legacy: window.Element,

  initialize: function(el){
    var params = Array.link(arguments, {'document': Document.type, 'properties': Object.type});
    var props = params.properties || {}, doc = params.document || document;
    if ($type(el) == 'string'){
      el = el.toLowerCase();
      if (Browser.Engine.trident && props){
        ['name', 'type', 'checked'].each(function(attribute){
          if (!props[attribute]) return;
          el += ' ' + attribute + '="' + props[attribute] + '"';
          if (attribute != 'checked') delete props[attribute];
        });
        el = '<' + el + '>';
      }
      el = doc.createElement(el);
    }
    el = $.element(el);
    return (!props || !el) ? el : el.set(props);
  },

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

});

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

var TextNode = new Native({

  name: 'TextNode',

  initialize: function(text, doc){
    return $extend((doc || document).createTextNode(text), this);
  }

});

var IFrame = new Native({

  name: 'IFrame',

  generics: false,

  initialize: function(){
    Native.UID++;
    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_' + Native.UID);
    ((iframe = iframe || new Element('iframe'))).set(props);
    var onFrameLoad = function(){
      var host = $try(function(){
        return iframe.contentWindow.location.host;
      });
      if (host && host == window.location.host){
        iframe.window = iframe.contentWindow;
        var win = new Window(iframe.window);
        var doc = new Document(iframe.window.document);
        $extend(win.Element.prototype, Element.Prototype);
      }
      onload.call(iframe.contentWindow);
    };
    (!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 = {};
      var 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({

  filterBy: function(filter){
    if (!filter) return this;
    return new Elements(this.filter(($type(filter) == 'string') ? function(item){
      return item.match(filter);
    } : filter));
  }

});

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({

  $: function(el, notrash){
    if (el && el.$attributes) return el;
    var type = $type(el);
    return ($[type]) ? $[type](el, notrash, 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);
  }

});

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

$.element = function(el, notrash){
  el.uid = el.uid || [Native.UID++];
  if (!notrash && Garbage.collect(el) && !el.$family) $extend(el, Element.Prototype);
  return el;
};

$.textnode = function(el, notrash){
  return (notrash || el.$family) ? el : $extend(el, TextNode.prototype);
};

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

Native.implement([Element, Document], {

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

  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.implement({

  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);
  },

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

  appendText: function(text, where){
    return this.grab(new TextNode(text, this.ownerDocument), where);
  },

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

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

  clone: function(contents){
    var temp = new Element('div').grab(this.cloneNode(contents !== false));
    Array.each(temp.getElementsByTagName('*'), function(element){
      if (element.id) element.removeAttribute('id');
    });
    return new Element('div').set('html', temp.innerHTML).getFirst();
  },

  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){
    var result = false;
    if (this.currentStyle) result = this.currentStyle[property.camelCase()];
    else result = this.ownerDocument.window.getComputedStyle(this, null).getPropertyValue([property.hyphenate()]);
    return result;
  },

  empty: function(){
    var elements = $A(this.getElementsByTagName('*'));
    elements.each(function(element){
      $try(Element.prototype.dispose, element);
    });
    Garbage.trash(elements);
    $try(Element.prototype.set, this, ['html', '']);
    return this;
  },

  destroy: function(){
    Garbage.kill(this.empty().dispose());
    return null;
  },

  toQueryString: function(){
    var queryString = [];
    this.getElements('input, select, textarea', true).each(function(el){
      var name = el.name, type = el.type, value = Element.get(el, 'value');
      if (value === false || !name || el.disabled) return;
      $splat(value).each(function(val){
        queryString.push(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);
    return (EA.Bools[attribute]) ? !!value : value;
  },

  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 && 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){
    if (!(el = $(el, true))) return false;
    return Element.getParents(el, this.get('tag'), true).contains(this);
  }

});

})();

TextNode.implement({

  inject: Element.prototype.inject,

  dispose: Element.prototype.dispose

});

Element.alias('dispose', 'remove').alias('getLast', 'getLastChild');

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.value = {get: function(){
  switch (Element.get(this, 'tag')){
    case 'select':
      var values = [];
      Array.each(this.options, function(option){
        if (option.selected) values.push(option.value);
      });
      return (this.multiple) ? values : values[0];
    case 'input': if (['checkbox', 'radio'].contains(this.type) && !this.checked) return false;
    default: return $pick(this.value, false);
  }
}};

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

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']
});

(function(EA){

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

})(Element.Attributes);

var Garbage = {

  Elements: {},

  ignored: {'object': 1, 'embed': 1, 'OBJECT': 1, 'EMBED': 1},

  collect: function(el){
    if (el.$attributes) return true;
    if (Garbage.ignored[el.tagName]) return false;
    Garbage.Elements[el.uid] = el;
    el.$attributes = {};
    return true;
  },

  trash: function(elements){
    for (var i = elements.length, el; i--; i) Garbage.kill(elements[i]);
  },

  kill: function(el){
    if (!el || !el.$attributes) return;
    delete Garbage.Elements[el.uid];
    if (el.retrieve('events')) el.removeEvents();
    for (var p in el.$attributes) el.$attributes[p] = null;
    if (Browser.Engine.trident){
      for (var d in Element.Prototype) el[d] = null;
    }
    el.$attributes = el.uid = null;
  },

  empty: function(){
    for (var uid in Garbage.Elements) Garbage.kill(Garbage.Elements[uid]);
  }

};

window.addListener('beforeunload', function(){
  window.addListener('unload', Garbage.empty);
  if (Browser.Engine.trident) window.addListener('unload', CollectGarbage);
});


Element.extend = Element.implement;

Elements.extend = Elements.implement;

Element.implement({

  getFormElements: function(){
    return this.getElements('input, textarea, select');
  },

  getValue: function(){
    return this.get('value');
  },

  getText: function(){
    return this.get('text');
  },

  setText: function(text){
    return this.set('text', text);
  },

  setHTML: function(){
    return this.set('html', $A(arguments));
  },

  getTag: function(){
    return this.get('tag');
  },

  replaceWith: function(el){
    el = $(el);
    this.parentNode.replaceChild(el, this);
    return el;
  },
  
  removeElements: function(){
    return this.dispose();
  },
  
  remove: function(){
    return this.dispose();
  }

});

(function(){
  var methods = {};
  Element.Inserters.each(function(value, key){
    methods['inject' + key.capitalize()] = function(el){
      return Element.inject(this, el, key);
    };
  });
  Element.implement(methods);
})();


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

License:
  MIT-style license.
*/

var Event = new Native({

  name: 'Event',

  initialize: function(event, win){
    win = win || window;
    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(/DOMMouseScroll|mousewheel/)){
      this.wheel = (event.wheelDelta) ? event.wheelDelta / 120 : -(event.detail || 0) / 3;
    } else if (type.test(/key/)){
      this.code = event.which || event.keyCode;
      var key = Event.Keys.keyOf(this.code);
      if (type == 'keydown'){
        var fKey = this.code - 111;
        if (fKey > 0 && fKey < 13) key = 'f' + fKey;
      }
      this.key = key || String.fromCharCode(this.code).toLowerCase();
    } else if (type.test(/(click|mouse|menu)/)){
      this.page = {
        x: event.pageX || event.clientX + win.document.documentElement.scrollLeft,
        y: event.pageY || event.clientY + win.document.documentElement.scrollTop
      };
      this.client = {
        x: event.pageX ? event.pageX - win.pageXOffset : event.clientX,
        y: event.pageY ? event.pageY - win.pageYOffset : event.clientY
      };
      this.rightClick = (event.which == 3) || (event.button == 2);
      var related = null;
      if (type.test(/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;
        }).create({attempt: Browser.Engine.gecko})() === false) related = false;
      }
    }

    return $extend(this, {
      event: event,
      type: type,
      relatedTarget: related,
      target: target,
      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;
  }

});

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.ownerDocument || self).window);
          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': 1, 'resize': 1, 'move': 1, 'DOMContentLoaded': 1, 'readystatechange': 1, //window
  'error': 1, 'abort': 1, 'scroll': 1 //misc
};

(function(){

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

Element.Events = new Hash({

  mouseenter: {

    base: 'mouseover',

    condition: checkRelatedTarget

  },

  mouseleave: {

    base: 'mouseout',

    condition: checkRelatedTarget

  },

  mousewheel: {

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

  },

  domready: {

    onAdd: function(fn){
      if ($type(this) == 'element') return;
      if (Browser.loaded){
        fn.call(this);
        return;
      }
      var self = this;
      var domReady = function(){
        if (!arguments.callee.done){
          arguments.callee.done = true;
          fn.call(self);
        };
        return true;
      };
      var check = function(context){
        if ((Browser.Engine.webkit ? ['loaded', 'complete'] : 'complete').contains(context.readyState)) return domReady();
        return false;
      };
      if (this.document.readyState && Browser.Engine.webkit){
        (function(){
          if (!check(self.document)) arguments.callee.delay(50);
        })();
      } else if (this.document.readyState && Browser.Engine.trident){
        var script = $('ie_domready');
        if (!script){
          var src = (this.location.protocol == 'https:') ? '//:' : 'javascript:void(0)';
          this.document.write('<script id="ie_domready" defer src="' + src + '"><\/script>');
          script = $('ie_domready');
        }
        if (!check(script)) script.addEvent('readystatechange', check.pass(script));
      } else {
        this.addEvent('load', domReady);
        this.document.addEvent('DOMContentLoaded', domReady);
      }
    }

  }

});

})();

window.addEvent('domready', function(){
  Browser.loaded = true;
});


Event.keys = Event.Keys;

/*
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){
    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({

  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({
  'width': '@px', 'height': '@px', 'left': '@px', 'top': '@px', 'bottom': '@px', 'right': '@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(@, @, @)';
});


Element.implement({
  
  setOpacity: function(op){
    return this.set('opacity', op);
  }
  
});

/*
Script: Selectors.js
  Adds advanced CSS Querying capabilities for selecting elements.

License:
  MIT-style license.
*/

Native.implement([Element, Document], {

  getElements: function(selectors, nocash){
    var Local = {};
    selectors = selectors.split(',');
    var elements = [], j = selectors.length;
    var ddup = (j > 1);
    for (var i = 0; i < j; i++){
      var selector = selectors[i], items = [], separators = [];
      selector = selector.trim().replace(Selectors.sRegExp, function(match){
        if (match.charAt(2)) match = match.trim();
        separators.push(match.charAt(0));
        return ':)' + match.charAt(1);
      }).split(':)');
      for (var k = 0, l = selector.length; k < l; k++){
        var sel = Selectors.parse(selector[k]);
        if (!sel) return [];
        var temp = Selectors.Method.getParam(items, separators[k - 1] || false, this, sel, Local);
        if (!temp) break;
        items = temp;
      }
      var partial = Selectors.Method.getItems(items, this);
      elements = (ddup) ? elements.concat(partial) : partial;
    }
    return new Elements(elements, {ddup: ddup, cash: !nocash});
  }

});

Window.implement({

  $E: function(selector){
    return this.document.getElement(selector);
  }

});

var Selectors = {

  'regExp': (/:([^-:(]+)[^:(]*(?:\((["']?)(.*?)\2\))?|\[(\w+)(?:([!*^$~|]?=)(["']?)(.*?)\6)?\]|\.[\w-]+|#[\w-]+|\w+|\*/g),

  'sRegExp': (/\s*([+>~\s])[a-zA-Z#.*\s]/g)

};

Selectors.parse = function(selector){
  var params = {'tag': '*', 'id': null, 'classes': [], 'attributes': [], 'pseudos': []};
  selector = selector.replace(Selectors.regExp, function(bit){
    switch (bit.charAt(0)){
      case '.': params.classes.push(bit.slice(1)); break;
      case '#': params.id = bit.slice(1); break;
      case '[': params.attributes.push([arguments[4], arguments[5], arguments[7]]); break;
      case ':':
        var xparser = Selectors.Pseudo.get(arguments[1]);
        if (!xparser){
          params.attributes.push([arguments[1], arguments[3] ? '=' : '', arguments[3]]);
          break;
        }
        var pseudo = {'name': arguments[1], 'parser': xparser, 'argument': (xparser.parser) ? xparser.parser(arguments[3]) : arguments[3]};
        params.pseudos.push(pseudo);
      break;
      default: params.tag = bit;
    }
    return '';
  });
  return params;
};

Selectors.Pseudo = new Hash;

Selectors.XPath = {

  getParam: function(items, separator, context, params){
    var temp = context.namespaceURI ? 'xhtml:' : '';
    switch (separator){
      case ' ': temp += '//'; break;
      case '>': temp += '/'; break;
      case '+': temp += '/following-sibling::*[1]/self::'; break;
      case '~': temp += '/following-sibling::'; break;
    }
    temp += params.tag;
    var i;
    for (i = params.pseudos.length; i--; i){
      var pseudo = params.pseudos[i];
      if (pseudo.parser && pseudo.parser.xpath) temp += pseudo.parser.xpath(pseudo.argument);
      else temp += ($chk(pseudo.argument)) ? '[@' + pseudo.name + '="' + pseudo.argument + '"]' : '[@' + pseudo.name + ']';
    }
    if (params.id) temp += '[@id="' + params.id + '"]';
    for (i = params.classes.length; i--; i) temp += '[contains(concat(" ", @class, " "), " ' + params.classes[i] + ' ")]';
    for (i = params.attributes.length; i--; i){
      var bits = params.attributes[i];
      switch (bits[1]){
        case '=': temp += '[@' + bits[0] + '="' + bits[2] + '"]'; break;
        case '*=': temp += '[contains(@' + bits[0] + ', "' + bits[2] + '")]'; break;
        case '^=': temp += '[starts-with(@' + bits[0] + ', "' + bits[2] + '")]'; break;
        case '$=': temp += '[substring(@' + bits[0] + ', string-length(@' + bits[0] + ') - ' + bits[2].length + ' + 1) = "' + bits[2] + '"]'; break;
        case '!=': temp += '[@' + bits[0] + '!="' + bits[2] + '"]'; break;
        case '~=': temp += '[contains(concat(" ", @' + bits[0] + ', " "), " ' + bits[2] + ' ")]'; break;
        case '|=': temp += '[contains(concat("-", @' + bits[0] + ', "-"), "-' + bits[2] + '-")]'; break;
        default: temp += '[@' + bits[0] + ']';
      }
    }
    items.push(temp);
    return items;
  },

  getItems: function(items, context){
    var elements = [];
    var doc = context.ownerDocument || context;
    var xpath = doc.evaluate('.//' + items.join(''), context, Selectors.XPath.resolver, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, j = xpath.snapshotLength; i < j; i++) elements[i] = xpath.snapshotItem(i);
    return elements;
  },

  resolver: function(prefix){
    return (prefix == 'xhtml') ? 'http://www.w3.org/1999/xhtml' : false;
  }

};

Selectors.Filter = {

  getParam: function(items, separator, context, params, Local){
    var found = [];
    var tag = params.tag;
    if (separator){
      var uniques = {}, child, children, item, k, l;
      var add = function(child){
        child.uid = child.uid || [Native.UID++];
        if (!uniques[child.uid] && Selectors.Filter.match(child, params, Local)){
          uniques[child.uid] = true;
          found.push(child);
          return true;
        }
        return false;
      };
      for (var i = 0, j = items.length; i < j; i++){
        item = items[i];  
        switch(separator){
          case ' ':
            children = item.getElementsByTagName(tag);
            params.tag = false;
            for (k = 0, l = children.length; k < l; k++) add(children[k]);
          break;
          case '>':
            children = item.childNodes;
            for (k = 0, l = children.length; k < l; k++){
              if (children[k].nodeType == 1) add(children[k]);
            }
          break;
          case '+':
            while ((item = item.nextSibling)){
              if (item.nodeType == 1){
                add(item);
                break;
              }
            }
          break;
          case '~':
            while ((item = item.nextSibling)){
              if (item.nodeType == 1 && add(item)) break;
            }
          break;
        }
      }  
      return found;
    }
    if (params.id){
      el = context.getElementById(params.id, true);
      params.id = false;
      return (el && Selectors.Filter.match(el, params, Local)) ? [el] : false;
    } else {
      items = context.getElementsByTagName(tag);
      params.tag = false;
      for (var m = 0, n = items.length; m < n; m++){
        if (Selectors.Filter.match(items[m], params, Local)) found.push(items[m]);
      }
    }
    return found;
  },

  getItems: $arguments(0)

};

Selectors.Filter.match = function(el, params, Local){
  Local = Local || {};

  if (params.id && params.id != el.id) return false;
  if (params.tag && params.tag != '*' && params.tag != el.tagName.toLowerCase()) return false;

  var i;

  for (i = params.classes.length; i--; i){
    if (!el.className || !el.className.contains(params.classes[i], ' ')) return false;
  }

  for (i = params.attributes.length; i--; i){
    var bits = params.attributes[i];
    var result = Element.prototype.getProperty.call(el, bits[0]);
    if (!result) return false;
    if (!bits[1]) continue;
    var condition;
    switch (bits[1]){
      case '=': condition = (result == bits[2]); break;
      case '*=': condition = (result.contains(bits[2])); break;
      case '^=': condition = (result.substr(0, bits[2].length) == bits[2]); break;
      case '$=': condition = (result.substr(result.length - bits[2].length) == bits[2]); break;
      case '!=': condition = (result != bits[2]); break;
      case '~=': condition = result.contains(bits[2], ' '); break;
      case '|=': condition = result.contains(bits[2], '-');
    }

    if (!condition) return false;
  }

  for (i = params.pseudos.length; i--; i){
    if (!params.pseudos[i].parser.filter.call(el, params.pseudos[i].argument, Local)) return false;
  }

  return true;
};

Selectors.Method = (Browser.Features.xpath) ? Selectors.XPath : Selectors.Filter;

Element.implement({

  match: function(selector){
    return (!selector || Selectors.Filter.match(this, Selectors.parse(selector)));
  }

});


Native.implement([Element, Document], {

  getElementsByClassName: function(className){
    return this.getElements('.' + className);
  },

  getElementsBySelector: function(selector){
    return this.getElements(selector);
  }

});

Elements.implement({

  filterByTag: function(tag){
    return this.filterBy(tag);
  },

  filterByClass: function(className){
    return this.filterBy('.' + className);
  },

  filterById: function(id){
    return this.filterBy('#' + id);
  },

  filterByAttribute: function(name, operator, value){
    return this.filterBy('[' + name + (operator || '') + (value || '') + ']');
  }

});

$E = function(selector, filter){
  return ($(filter) || document).getElement(selector);
};

var $ES = function(selector, filter){
  return ($(filter) || document).getElements(selector);
};


/*
Script: Selectors.Pseudo.js
  Adds CSS3 and other custom pseudo selectors support for selecting elements.

License:
  MIT-style license.

See Also:
  <http://www.w3.org/TR/2005/WD-css3-selectors-20051215/#pseudo-classes>
*/

Selectors.Pseudo.enabled = {

  xpath: function(){
    return '[not(@disabled)]';
  },

  filter: function(){
    return !(this.disabled);
  }
};


Selectors.Pseudo.empty = {

  xpath: function(){
    return '[not(node())]';
  },

  filter: function(){
    return !(this.innerText || this.textContent || '').length;
  }

};


Selectors.Pseudo.contains = {

  xpath: function(argument){
    return '[contains(text(), "' + argument + '")]';
  },

  filter: function(argument){
    for (var i = this.childNodes.length; i--; i){
      var child = this.childNodes[i];
      if (child.nodeName && child.nodeType == 3 && child.nodeValue.contains(argument)) return true;
    }
    return false;
  }

};

Selectors.Pseudo.nth = {

  parser: function(argument){
    argument = (argument) ? argument.match(/^([+-]?\d*)?([devon]+)?([+-]?\d*)?$/) : [null, 1, 'n', 0];
    if (!argument) return false;
    var inta = parseInt(argument[1]);
    var a = ($chk(inta)) ? inta : 1;
    var special = argument[2] || false;
    var b = parseInt(argument[3]) || 0;
    b = b - 1;
    while (b < 1) b += a;
    while (b >= a) b -= a;
    switch (special){
      case 'n': return {'a': a, 'b': b, 'special': 'n'};
      case 'odd': return {'a': 2, 'b': 0, 'special': 'n'};
      case 'even': return {'a': 2, 'b': 1, 'special': 'n'};
      case 'first': return {'a': 0, 'special': 'index'};
      case 'last': return {'special': 'last'};
      case 'only': return {'special': 'only'};
      default: return {'a': (a - 1), 'special': 'index'};
    }
  },

  xpath: function(argument){
    switch (argument.special){
      case 'n': return '[count(preceding-sibling::*) mod ' + argument.a + ' = ' + argument.b + ']';
      case 'last': return '[count(following-sibling::*) = 0]';
      case 'only': return '[not(preceding-sibling::* or following-sibling::*)]';
      default: return '[count(preceding-sibling::*) = ' + argument.a + ']';
    }
  },

  filter: function(argument, Local){
    var count = 0, el = this;
    switch (argument.special){
      case 'n':
        Local.Positions = Local.Positions || {};
        if (!Local.Positions[this.uid]){
          var children = this.parentNode.childNodes;
          for (var i = 0, l = children.length; i < l; i++){
            var child = children[i];
            if (child.nodeType != 1) continue;
            child.uid = child.uid || [Native.UID++];
            Local.Positions[child.uid] = count++;
          }
        }
        return (Local.Positions[this.uid] % argument.a == argument.b);
      case 'last':
        while ((el = el.nextSibling)){
          if (el.nodeType == 1) return false;
        }
        return true;
      case 'only':
        var prev = el;
        while((prev = prev.previousSibling)){
          if (prev.nodeType == 1) return false;
        }
        var next = el;
        while ((next = next.nextSibling)){
          if (next.nodeType == 1) return false;
        }
        return true;
      case 'index':
        while ((el = el.previousSibling)){
          if (el.nodeType == 1 && ++count > argument.a) return false;
        }
        return true;
    }
    return false;
  }

};

Selectors.Pseudo.extend({

  'even': {
    parser: function(){
      return {'a': 2, 'b': 1, 'special': 'n'};
    },
    xpath: Selectors.Pseudo.nth.xpath,
    filter: Selectors.Pseudo.nth.filter
  },

  'odd': {
    parser: function(){
      return {'a': 2, 'b': 0, 'special': 'n'};
    },
    xpath: Selectors.Pseudo.nth.xpath,
    filter: Selectors.Pseudo.nth.filter
  },

  'first': {
    parser: function(){
      return {'a': 0, 'special': 'index'};
    },
    xpath: Selectors.Pseudo.nth.xpath,
    filter: Selectors.Pseudo.nth.filter
  },

  'last': {
    parser: function(){
      return {'special': 'last'};
    },
    xpath: Selectors.Pseudo.nth.xpath,
    filter: Selectors.Pseudo.nth.filter
  },

  'only': {
    parser: function(){
      return {'special': 'only'};
    },
    xpath: Selectors.Pseudo.nth.xpath,
    filter: Selectors.Pseudo.nth.filter
  }

});


/*
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(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);
  }

});


var Json = JSON;

JSON.toString = JSON.encode;
JSON.evaluate = JSON.decode;

/*
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 = {

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

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

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

  remove: function(cookie, options){
    if ($type(cookie) == 'object') this.set(cookie.key, '', $merge(cookie, {duration: -1}));
    else this.set(cookie, '', $merge(options, {duration: -1}));
  }

};


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

License:
  MIT-style license.

Note:
  Dimensions requires an XHTML doctype.
*/

(function(){

var objects = function(self){
  var doc, great = true;
  switch ($type(self)){
    case 'window': doc = self.document; break;
    case 'document': doc = self; break;
    case 'element': doc = self.ownerDocument; great = false;
  }
  return {doc: doc, win: doc.window, self: self, great: (great || self === doc.body || self === doc.html)};
};

var great = function(self){
  return objects(self).great;
};

var Dimensions = {

  positioned: function(self){
    if (great(self)) return true;
    var style = self.style.position || (self.style.position = Element.getComputedStyle(self, 'position'));
    return (style != 'static');
  },

  getOffsetParent: function(self){
    if (!Browser.Engine.trident) return self.offsetParent;
    var el = self;
    while ((el = el.parentNode)){
      if (Dimensions.positioned(el)) return el;
    }
    return false;
  },

  getOffsetSize: function(self){
    var obj = {}, dims = {X: 'Width', Y: 'Height'}, objs = objects(self);
    for (var Z in dims) obj[Z.toLowerCase()] = (function(){
      if (objs.great){
        if (Browser.Engine.webkit419) return objs.win['inner' + dims[Z]];
        if (Browser.Engine.presto) return objs.doc.body['client' + dims[Z]];
        return objs.doc.documentElement['client' + dims[Z]];
      } else {
        return self['offset' + dims[Z]];
      }
    })();
    return obj;
  },

  getScrollSize: function(self){
    var obj = {}, dims = {X: 'Width', Y: 'Height'}, objs = objects(self);
    for (var Z in dims) obj[Z.toLowerCase()] = (function(){
      if (objs.great){
        if (Browser.Engine.trident) return Math.max(objs.doc.documentElement['offset' + dims[Z]], objs.doc.documentElement['scroll' + dims[Z]]);
        if (Browser.Engine.webkit) return objs.doc.body['scroll' + dims[Z]];
        return objs.doc.documentElement['scroll' + dims[Z]];
      } else {
        return self['scroll' + dims[Z]];
      }
    })();
    return obj;
  },

  getScroll: function(self){
    var obj = {}, dims = {X: 'Left', Y: 'Top'}, objs = objects(self);
    for (var Z in dims) obj[Z.toLowerCase()] = (function(){
      return (objs.great) ? objs.win['page' + Z + 'Offset'] || objs.doc.documentElement['scroll' + dims[Z]] : self['scroll' + dims[Z]];
    })();
    return obj;
  },

  getPosition: function(self, relative){
    if (great(self) || relative == self) return {x: 0, y: 0};
    var el = self, left = 0, top = 0, position;

    while (el){
      var offsetParent = Dimensions.getOffsetParent(el);
      if (!offsetParent) break;
      position = Dimensions.getRelativePosition(el, !great(offsetParent));
      left += position.x;
      top += position.y;
      el = offsetParent;
    }

    var rpos = (relative) ? Dimensions.getPosition($(relative, true)) : {x: 0, y: 0};
    return {x: left - rpos.x, y: top - rpos.y};
  },

  getRelativePosition: function(self, client){
    if (great(self)) return {x: 0, y: 0};

    var el = self, left = self.offsetLeft, top = self.offsetTop;

    if (Browser.Engine.trident){
      while ((el = el.offsetParent) && !Dimensions.positioned(el)){
        left += el.offsetLeft;
        top += el.offsetTop;
      }
      el = self;
    }

    var position = {x: left, y: top}, isPositioned = Dimensions.positioned(self);
    
    while ((el = el.parentNode)){
      var isOffsetParent = Dimensions.positioned(el);
      if ((!isOffsetParent || client) && ((!isPositioned || isOffsetParent) || Browser.Engine.presto)){
        var scroll = Dimensions.getScroll(el);
        position.x -= scroll.x;
        position.y -= scroll.y;
      }
      if (isOffsetParent) break;
    }

    return position;
  },

  getCoordinates: function(self, relative){
    var position = Dimensions.getPosition(self, relative), size = Dimensions.getOffsetSize(self);
    var obj = {'top': position.y, 'left': position.x, 'width': size.x, 'height': size.y};
    obj.right = obj.left + obj.width;
    obj.bottom = obj.top + obj.height;
    return obj;
  }

};

var methods = {};

Hash.each(Dimensions, function(value, key){
  methods[key] = function(arg){
    return value(this, arg);
  };
});

Native.implement([Element, Document], methods);

Document.implement({

  scrollTo: function(x, y){
    this.window.scrollTo(x, y);
  }

});

Element.implement({

  scrollTo: function(x, y){
    this.scrollLeft = x;
    this.scrollTop = y;
  },

  computePosition: function(obj, client){
    var scroll, el = this;
    var position = {left: obj.x - this.getComputedStyle('margin-left').toInt() || 0, top: obj.y - this.getComputedStyle('margin-top').toInt() || 0};
    if (client){
      scroll = Dimensions.getScroll(Dimensions.getOffsetParent(this));
      position.left += scroll.x;
      position.top += scroll.y;
    }
    if (Browser.Engine.presto){
      while ((el = el.parentNode) && el != this.offsetParent){
        scroll = Dimensions.getScroll(el);
        position.left += scroll.x;
        position.top += scroll.y;
      }
    }
    return position;
  },

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

});

})();

Window.implement({
  
  getSize: function(){
    return {
      size: this.document.getOffsetSize(),
      scroll: this.document.getScroll(),
      scrollSize: this.document.getScrollSize()
    };
  },
  
  getHeight: function(){
    return this.document.getOffsetSize().y;
  },
  
  getWidth: function(){
    return this.document.getOffsetSize().x;    
  },
  
  getScrollTop: function(){
    return this.document.getScroll().y;    
  },
  
  getScrollLeft: function(){
    return this.document.getScroll().x;
  },
  
  getScrollHeight: function(){
    return this.document.getScrollSize().y;
  },
  
  getScrollWidth: function(){
    return this.document.getScrollSize().x;
  }
  
});

Element.implement({
  
  getSize: function(){
    return {
      size: this.getOffsetSize(),
      scroll: this.getScroll(),
      scrollSize: this.getScrollSize()
    };
  },
  
  getTop: function(){
    return this.getPosition().y;
  },
  
  getLeft: function(){
    return this.getPosition().x;
  }
  
});

/*
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({
  
  name: 'Color',
  
  protect: false,
  
  initialize: function(color, type){
    type = type || ($type(color) == 'array') ? 'rgb' : 'hex';
    var rgb, hsb;
    switch (type){
      case 'rgb':
        rgb = color;
        hsb = rgb.rgbToHsb();
        break;
      case 'hsb':
        rgb = color.hsbToRgb();
        hsb = color;
        break;
      default:
        rgb = color.hexToRgb(true);
        hsb = rgb.rgbToHsb();
    }
    rgb.hsb = hsb;
    rgb.hex = rgb.rgbToHex();
    return $extend(rgb, this);
  }

});

Color.implement({

  mix: function(){
    var colors = $A(arguments);
    var alpha = ($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');
};

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;
  }

});


/*
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 = function(path, options){
  if (!Swiff.fixed) Swiff.fix();
  var instance = 'Swiff_' + Native.UID++;
  options = $merge({
    id: instance,
    height: 1,
    width: 1,
    container: null,
    properties: {},
    params: {
      quality: 'high',
      allowScriptAccess: 'always',
      wMode: 'transparent',
      swLiveConnect: true
    },
    events: {},
    vars: {}
  }, options);
  var params = options.params, vars = options.vars, id = options.id;
  var properties = $extend({height: options.height, width: options.width}, options.properties);
  Swiff.Events[instance] = {};
  for (var event in options.events){
    Swiff.Events[instance][event] = function(){
      options.events[event].call($(options.id));
    };
    vars[event] = 'Swiff.Events.' + instance + '.' + event;
  }
  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="' + options.id + '"';
  for (var property in properties) build += ' ' + property + '="' + properties[property] + '"';
  build += '>';
  for (var param in params) build += '<param name="' + param + '" value="' + params[param] + '" />';
  build += '</object>';
  return ($(options.container) || new Element('div')).set('html', build).firstChild;
};

Swiff.extend({

  Events: {},

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

  getVersion: function(){
    if (!$defined(Swiff.pluginVersion)){
      var version;
      if (navigator.plugins && navigator.mimeTypes.length){
        version = navigator.plugins["Shockwave Flash"];
        if (version && version.description) version = version.description;
      } else if (Browser.Engine.trident){
        version = $try(function(){
          return new ActiveXObject("ShockwaveFlash.ShockwaveFlash").GetVariable("$version");
        });
      }
      Swiff.pluginVersion = ($type(version) == 'string') ? parseInt(version.match(/\d+/)[0]) : 0;
    }
    return Swiff.pluginVersion;
  },

  fix: function(){
    Swiff.fixed = true;
    window.addEvent('beforeunload', function(){
      __flash_unloadHandler = __flash_savedUnloadHandler = $empty;
    });
    if (!Browser.Engine.trident) return;
    window.addEvent('unload', function(){
      Array.each(document.getElementsByTagName('object'), function(obj){
        obj.style.display = 'none';
        for (var p in obj){
          if (typeof obj[p] == 'function') obj[p] = $empty;
        }
      });
    });
  }

});


/*
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: 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.pass = this.pass || this;
    this.setOptions(options);
    this.options.duration = Fx.Durations[this.options.duration] || this.options.duration.toInt();
    if (this.options.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(){
    if (!this.timer) return true;
    switch (this.options.link){
      case 'cancel': this.cancel(); return true;
      case 'chain': this.chain(this.start.bind(this, arguments)); return false;
    }
    return false;
  },

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

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

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

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

  onComplete: function(){
    return this.fireEvent('onComplete', this.pass).callChain();
  },

  onCancel: function(){
    return this.fireEvent('onCancel', this.pass).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};


Fx.implement({

  custom: function(from, to){
    return this.start(from, to);
  },

  clearTimer: function(){
    return this.cancel();
  }

});

Fx.Base = Fx;

/*
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 = $lambda(value)();
    value = ($type(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){
    element.setStyle(property, this.serve(value, this.options.unit));
  },

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

  search: function(selector){
    var to = {};
    Array.each(document.styleSheets, function(sheet, j){
      var rules = sheet.rules || sheet.cssRules;
      Array.each(rules, function(rule, i){
        if (!rule.style || !rule.selectorText || !rule.selectorText.test('^' + selector + '$')) return;
        Element.Styles.each(function(value, style){
          if (!rule.style[style] || Element.ShortStyles[style]) return;
          value = rule.style[style];
          to[style] = (value.test(/^rgb/)) ? value.rgbToHex() : value;
        });
      });
    });
    return to;
  }

});

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: function(value){
      return parseFloat(value);
    },

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

    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, property, options){
    this.element = this.pass = $(element);
    this.property = property;
    arguments.callee.parent(options);
  },

  set: function(now){
    this.render(this.element, this.property, now);
    return this;
  },

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

});

Element.Properties.tween = {

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

  get: function(property, options){
    if (options || !this.retrieve('tween')) this.set('tween', options);
    var tween = this.retrieve('tween');
    tween.property = property;
    return tween;
  }

};

Element.implement({

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

  fade: function(how){
    var fade = this.get('tween', 'opacity');
    how = $pick(how, 'toggle');
    switch (how){
      case 'in': fade.start(1); break;
      case 'out': fade.start(0); break;
      case 'show': fade.set(1); break;
      case 'hide': fade.set(0); break;
      case 'toggle': fade.start((function(){
        return (this.getStyle('visibility') == 'hidden') ? 1 : 0;
      }).bind(this)); break;
      default: fade.start(how);
    }
    return this;
  },

  highlight: function(color){
    this.get('tween', 'background-color').start(color || '#ffff88', function(){
      var style = this.getStyle('background-color');
      return (style == 'transparent') ? '#ffffff' : style;
    }.bind(this));
    return this;
  },

  effect: function(property, options){
    return new Fx.Tween(this, property, options);
  }

});


Fx.Style = Fx.Tween;


/*
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.pass = $(element);
    arguments.callee.parent(options);
  },

  set: function(now){
    for (var p in now) this.render(this.element, p, now[p]);
    return this;
  },

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

  start: function(properties){
    if (!this.check(properties)) return this;
    if ($type(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 arguments.callee.parent(from, to);
  }

});

Element.Properties.morph = {

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

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

};

Element.implement({

  morph: function(props){
    this.get('morph').start(props);
    return this;
  },
  
  effects: function(options){
    return new Fx.Morph(this, options);
  }

});


Fx.Styles = Fx.Morph;


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

License:
  MIT-style license.

Note:
  Fx.Slide requires an XHTML doctype.
*/

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){
        this.wrapper.setStyle(this.layout, 'auto');
        if (Browser.Engine.webkit419) this.element.dispose().inject(this.wrapper);
      }
    }, true);
    this.element = this.pass = $(element);
    arguments.callee.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(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 arguments.callee.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.store('slide', new Fx.Slide(this, $extend({link: 'cancel'}, options)));
  },

  get: function(options){
    if (options || !this.retrieve('slide')) this.set('slide', options);
    return this.retrieve('slide');
  }

};

Element.implement({

  slide: function(how){
    how = how || 'toggle';
    var slide = this.get('slide');
    switch(how){
      case 'hide': slide.hide(); break;
      case 'show': slide.show(); break;
      default: slide.start(how);
    }
    return this;
  }

});


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

License:
  MIT-style license.

Note:
  Fx.Scroll requires an XHTML doctype.
*/

Fx.Scroll = new Class({

  Extends: Fx,

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

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

    switch($type(this.element)){
      case 'window': this.element = this.element.document; break;
      case 'element': if (this.element.get('tag') == 'body') this.element = this.element.ownerDocument;
    }

    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(x, y)) return this;
    var offsetSize = this.element.getOffsetSize(), scrollSize = this.element.getScrollSize(), 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 arguments.callee.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 = Element.getPosition($(el, true), this.element);
    var scroll = ($type(this.element) == 'element') ? this.element.getScroll() : {x: 0, y: 0};
    return this.start(position.x + scroll.x, position.y + scroll.y);
  }

});


Fx.Scroll.implement({

  scrollTo: function(y, x){
    return this.start(y, x);
  }

});

/*
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 ($type(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: {},
    async: true,
    method: 'post',
    link: 'ignore',
    isSuccess: null,
    emulation: true,
    urlEncoded: true,
    encoding: 'utf-8',
    evalScripts: false,
    evalResponse: false
  },

  getXHR: function(){
    return (window.XMLHttpRequest) ? new XMLHttpRequest() : ((window.ActiveXObject) ? new ActiveXObject('Microsoft.XMLHTTP') : false);
  },

  initialize: function(options){
    if (!(this.xhr = this.getXHR())) return;
    this.setOptions(options);
    this.options.isSuccess = this.options.isSuccess || this.isSuccess;
    this.headers = new Hash(this.options.headers).extend({
      'X-Requested-With': 'XMLHttpRequest',
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    });
  },

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

  onSuccess: function(args, process){
    if (process && $type(args) == 'string') args = this.processScripts(args);
    this.fireEvent('onComplete', args).fireEvent('onSuccess', args).callChain();
  },

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

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

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

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

  send: function(options){
    if (!this.check(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){
      try{
        this.xhr.setRequestHeader(key, value);
      } catch(e){
        this.fireEvent('onException', [e, 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 = this.getXHR();
    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 = {

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

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

};

Element.implement({

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

});


Object.toQueryString = Hash.toQueryString;

var XHR = new Class({

  Extends: Request,

  options: {
    update: false
  },

  initialize: function(url, options){
    arguments.callee.parent(options);
    this.onComplete = $empty;
    this.url = url;
  },

  request: function(data){
    return this.send(this.url, data);
  },

  send: function(url, data){
    if (!this.check(url, data)) return this;
    return arguments.callee.parent({url: url, data: data});
  },

  onSuccess: function(text, xml){
    if (this.options.update) $(this.options.update).empty().set('html', text);
    arguments.callee.parent(text, xml);
    this.fireEvent('onComplete', [text, xml]);
  }

});

var Ajax = XHR;

/*
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);
    return (match) ? match[1] : text;
  },

  onSuccess: function(text){
    var opts = this.options, res = this.response;
    res.html = this.processScripts(this.processHTML(text));
    var node = new Element('div', {html: res.html});
    res.elements = node.getElements('*');
    res.tree = (opts.filter) ? res.elements.filterBy(opts.filter) : $A(node.childNodes).filter(function(el){
      return ($type(el) != 'whitespace');
    });
    if (opts.update) $(opts.update).empty().adopt(res.tree);
    arguments.callee.parent([res.tree, res.elements, res.html], false);
  }

});

Element.Properties.load = {

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

  set: function(options){
    var load = this.retrieve('load');
    if (load) load.cancel();
    return this.store('load', new Request.HTML($extend({link: 'cancel', update: this, method: 'get'}, options)));
  }

};

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

  onSuccess: function(text){
    this.response.json = JSON.decode(text, this.options.secure);
    arguments.callee.parent([this.response.json], false);
  }

});


JSON.Remote = new Class({

  options: {
    key: 'json'
  },

  Extends: Request.JSON,

  initialize: function(url, options){
    arguments.callee.parent(options);
    this.onComplete = $empty;
    this.url = url;
  },

  send: function(data){
    if (!this.check(data)) return this;
    return arguments.callee.parent({url: this.url, data: {json: Json.encode(data)}});
  },

  onSuccess: function(text){
    arguments.callee.parent(text);
    this.fireEvent('onComplete', [this.response.json]);
  }

});

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

License:
  MIT-style license.

Note:
  This Script requires an XHTML doctype.
*/

var Drag = new Class({

  Implements: [Events, Options],

  options: {/*
    onBeforeStart: $empty,
    onStart: $empty,
    onDrag: $empty,
    onCancel: $empty,
    onComplete: $empty,*/
    snap: 6,
    unit: 'px',
    grid: false,
    limit: false,
    handle: 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.ownerDocument;
    this.setOptions(params.options || {});
    this.handle = $(this.options.handle) || this.element;
    this.mouse = {'now': {}, 'pos': {}};
    this.value = {'start': {}, 'now': {}};
    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)
    };
    this.attach();
  },

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

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

  start: function(event){
    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;
      this.value.now[z] = this.element.getStyle(this.options.modifiers[z]).toInt();
      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.addEvent('mousemove', this.bound.check);
    this.document.addEvent('mouseup', this.bound.cancel);
    event.stop();
  },

  check: function(event){
    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.addEvent('mousemove', this.bound.drag);
      this.document.addEvent('mouseup', this.bound.stop);
      this.fireEvent('onStart', this.element);
      this.fireEvent('onSnap', this.element);
    }
    event.stop();
  },

  drag: function(event){
    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.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]);
      this.element.setStyle(this.options.modifiers[z], this.value.now[z] + this.options.unit);
    }
    this.fireEvent('onDrag', this.element);
    event.stop();
  },

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

  stop: function(event){
    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));
  }

});

Drag.Base = Drag;

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

License:
  MIT-style license.

Note:
  Drag.Move requires an XHTML doctype.
*/

Drag.Move = new Class({

  Extends: Drag,

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

  initialize: function(element, options){
    arguments.callee.parent(element, options);
    this.droppables = $$(this.options.droppables);
    this.container = $(this.options.container);
    var position = (this.element.positioned()) ? this.element.getStyle('position') : 'absolute';
    this.element.position(this.element.getRelativePosition()).setStyle('position', position);
  },

  start: function(event){
    if (this.overed){
      this.overed.fireEvent('leave', [this.element, this]);
      this.overed = null;
    }
    if (this.container){
      var el = this.element, cont = this.container, ccoo = cont.getCoordinates(el.getOffsetParent()), 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};
    }
    arguments.callee.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.overed.fireEvent('leave', [this.element, this]);
      this.overed = overed ? overed.fireEvent('over', [this.element, this]) : null;
    }
  },

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

  stop: function(event){
    this.checkDroppables();
    if (this.overed) this.overed.fireEvent('drop', [this.element, this]);
    else this.element.fireEvent('emptydrop', this);
    return arguments.callee.parent(event);
  }

});

Element.implement({

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

});


/*
Script: Selectors.Children.js
  Adds the :children selector for selecting ranges of children of an element.

License:
  MIT-style license.
*/

Selectors.Pseudo.children = {

  parser: function(argument){
    argument = (argument) ? argument.match(/^([-+]?\d*)?([\-+:])?([-+]?\d*)?$/) : [null, 0, false, 0];
    if (!argument) return false;
    argument[1] = parseInt(argument[1]) || 0;
    var int1 = parseInt(argument[3]);
    argument[3] = ($chk(int1)) ? int1 : 0;
    switch (argument[2]){
      case '-': case '+': case ':': return {'a': argument[1], 'b': argument[3], 'special': argument[2]};
      default: return {'a': argument[1], 'b': 0, 'special': 'index'};
    }
  },

  xpath: function(argument){
    var include = '';
    var len = 'count(../child::*)';
    var a = argument.a + ' + ' + ((argument.a < 0) ? len : 0);
    var b = argument.b + ' + ' + ((argument.b < 0) ? len : 0);
    var pos = 'position()';
    switch (argument.special){
      case '-':
        b = '((' + a + ' - ' + b + ') mod (' + len + '))';
        a += ' + 1';
        b += ' + 1';
        include = '(' + b + ' < 1 and (' + pos + ' <= ' + a + ' or ' + pos + ' >= (' + b + ' + ' + len + ')' + ')) or (' + pos + ' <= ' + a + ' and ' + pos + ' >= ' + b + ')';
      break;
      case '+': b = '((' + a + ' + ' + b + ') mod ( ' + len + '))';
      case ':':
        a += ' + 1';
        b += ' + 1';
        include = '(' + b + ' < ' + a + ' and (' + pos + ' >= ' + a + ' or ' + pos + ' <= ' + b + ')) or (' + pos + ' >= ' + a + ' and ' + pos + ' <= ' + b + ')';
      break;
      default: include = (a + ' + 1');
    }
    return '[' + include + ']';
  },

  filter: function(el, argument, i, all){
    var include = false;
    var len = all.length;
    var a = argument.a + ((argument.a < 0) ? len : 0);
    var b = argument.b + ((argument.b < 0) ? len : 0);
    switch (argument.special){
      case '-':
        b = (a - b) % len;
        include = (b < 0) ? (i <= (a - 1) || i >= (b + len)) : (i <= a && i >= b);
      break;
      case '+': b = (b + a) % len;
      case ':': include = (b < a) ? (i >= a || i <= b) : (i >= a && i <= b); break;
      default: include = (all[a] == el);
    }
    return include;
  }
};


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

License:
  MIT-style license.
*/

Hash.Cookie = new Class({

  Implements: Options,

  options: {
    autoSave: true
  },

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

  save: function(){
    var str = JSON.encode(this.hash);
    if (str.length > 4096) return false; //cookie would be truncated!
    if (str.length == 2) Cookie.remove(this.name, this.options);
    else Cookie.set(this.name, str, this.options);
    return true;
  },

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

});

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


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

License:
  MIT-style license.

Note:
  Sortables requires an XHTML doctype.
*/

var Sortables = new Class({

  Implements: [Events, Options],

  options: {/*
    onSort: $empty,
    onStart: $empty,
    onComplete: $empty,*/
    snap: 4,
    handle: false,
    revert: false,
    constrain: false,
    cloneOpacity: 0.7,
    elementOpacity: 0.3
  },

  initialize: function(lists, options){
    this.setOptions(options);
    this.elements = [];
    this.lists = [];
    this.idle = true;

    this.addLists($$($(lists) || lists));
    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));
      var insert = element.retrieve('sortables:insert', this.insert.bind(this, element));
      (this.options.handle ? element.getElement(this.options.handle) || element : element).addEvent('mousedown', start);
      element.addEvent('over', insert);
    }, this);
    return this;
  },

  addLists: function(){
    Array.flatten(arguments).each(function(list){
      this.lists.push(list);
      this.addItems(list.getChildren());
      list.addEvent('over', list.retrieve('sortables:insert', this.insert.bind(this, [list, 'inside'])));
    }, this);
    return this;
  },

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

  removeLists: function(){
    var lists = [];
    Array.flatten(arguments).each(function(list){
      lists.push(list);
      this.lists.remove(list);
      this.removeItems(list.getChildren());
      list.removeEvent('over', list.retrieve('sortables:insert'));
    }, this);
    return lists;
  },

  getClone: function(element){
    return element.clone(true).setStyles({
      'margin': '0px',
      'position': 'absolute',
      'visibility': 'hidden'
    }).inject(this.list).position(element.getRelativePosition());
  },

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

  insert: function(element, where){
    if (where) {
      this.list = element;
      this.drag.droppables = this.getDroppables();
    }
    where = 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(element);

    this.drag = this.clone.makeDraggable({
      snap: this.options.snap,
      container: this.options.constrain && this.clone.getParent(),
      droppables: this.getDroppables(),
      onStart: function(){
        event.stop();
        this.clone.set('opacity', this.options.cloneOpacity);
        this.element.set('opacity', this.options.elementOpacity);
        this.fireEvent('onStart', [this.element, this.clone]);
      }.bind(this),
      onCancel: this.reset.bind(this),
      onComplete: this.end.bind(this)
    });

    this.drag.start(event);
  },

  end: function(){
    this.element.set('opacity', this.opacity);
    this.drag.detach();
    if (this.effect){
      var dim = this.element.getStyles('width', 'height');
      var pos = this.clone.computePosition(this.element.getPosition(this.clone.offsetParent), this.clone.getParent().positioned());
      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(index, modifier){
    var serial = this.lists.map(function(list){
      return list.getChildren().map(modifier || function(element, index){
        return element.get('id');
      }, this);
    }, this);

    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 tooltips that follow the mouse cursor when hovering over an element.

License:
  MIT-style license.

Note:
  Tips requires an XHTML doctype.
*/

var Tips = new Class({

  Implements: [Events, Options],

  options: {
    onShow: function(tip){
      tip.setStyle('visibility', 'visible');
    },
    onHide: function(tip){
      tip.setStyle('visibility', 'hidden');
    },
    maxTitleChars: 30,
    showDelay: 100,
    hideDelay: 100,
    className: 'tool',
    offsets: {'x': 16, 'y': 16},
    fixed: false
  },

  initialize: function(elements, options){
    this.setOptions(options);
    elements = $$(elements);
    this.document = (elements.length) ? elements[0].ownerDocument : document;
    this.toolTip = new Element('div', {
      'class': this.options.className + '-tip',
      'styles': {
        'position': 'absolute',
        'top': '0',
        'left': '0',
        'visibility': 'hidden'
      }
    }, this.document).inject(this.document.body);
    this.wrapper = new Element('div').inject(this.toolTip);
    elements.each(this.build, this);
  },

  build: function(el){
    el.$attributes.myTitle = (el.href && el.get('tag') == 'a') ? el.href.replace('http://', '') : (el.rel || false);
    if (el.title){
      var dual = el.title.split('::');
      if (dual.length > 1){
        el.$attributes.myTitle = dual[0].trim();
        el.$attributes.myText = dual[1].trim();
      } else {
        el.$attributes.myText = el.title;
      }
      el.removeProperty('title');
    } else {
      el.$attributes.myText = false;
    }
    if (el.$attributes.myTitle && el.$attributes.myTitle.length > this.options.maxTitleChars)
      el.$attributes.myTitle = el.$attributes.myTitle.substr(0, this.options.maxTitleChars - 1) + "&hellip;";
    el.addEvent('mouseenter', function(event){
      this.start(el);
      if (!this.options.fixed) this.locate(event);
      else this.position(el);
    }.bind(this));
    if (!this.options.fixed) el.addEvent('mousemove', this.locate.bind(this));
    var end = this.end.bind(this);
    el.addEvent('mouseleave', end);
  },

  start: function(el){
    this.wrapper.empty();
    if (el.$attributes.myTitle){
      this.title = new Element('span').inject(
        new Element('div', {'class': this.options.className + '-title'}
      ).inject(this.wrapper)).set('html', el.$attributes.myTitle);
    }
    if (el.$attributes.myText){
      this.text = new Element('span').inject(
        new Element('div', {'class': this.options.className + '-text'}
      ).inject(this.wrapper)).set('html', el.$attributes.myText);
    }
    $clear(this.timer);
    this.timer = this.show.delay(this.options.showDelay, this);
  },

  end: function(event){
    $clear(this.timer);
    this.timer = this.hide.delay(this.options.hideDelay, this);
  },

  position: function(element){
    var pos = element.getPosition();
    this.toolTip.setStyles({
      'left': pos.x + this.options.offsets.x,
      'top': pos.y + this.options.offsets.y
    });
  },

  locate: function(event){
    var doc = this.document.getOffsetSize();
    var scroll = this.document.getScroll();
    var tip = {'x': this.toolTip.offsetWidth, 'y': this.toolTip.offsetHeight};
    var prop = {'x': 'left', 'y': 'top'};
    for (var z in prop){
      var pos = event.page[z] + this.options.offsets[z];
      if ((pos + tip[z] - scroll[z]) > doc[z]) pos = event.page[z] - this.options.offsets[z] - tip[z];
      this.toolTip.setStyle(prop[z], pos);
    }
  },

  show: function(){
    if (this.options.timeout) this.timer = this.hide.delay(this.options.timeout, this);
    this.fireEvent('onShow', [this.toolTip]);
  },

  hide: function(){
    this.fireEvent('onHide', [this.toolTip]);
  }

});


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

License:
  MIT-style license.

Note:
  SmoothScroll requires an XHTML doctype.
*/

var SmoothScroll = new Class({

  Extends: Fx.Scroll,

  initialize: function(options, win){
    arguments.callee.parent(win || window, options);
    this.links = (this.options.links) ? $$(this.options.links) : $$(this.element.document.links);
    var location = this.element.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(){
      this.element.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.

Note:
  Slider requires an XHTML doctype.
*/

var Slider = new Class({

  Implements: [Events, Options],

  options: {/*
    onChange: $empty,
    onComplete: $empty,*/
    onTick: function(position){
      this.knob.setStyle(this.property, position);
    },
    offset: 0,
    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));
    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.max = this.element[offset] - this.knob[offset] + (this.options.offset * 2);
    this.knob.setStyle('position', 'relative').setStyle(this.property, - this.options.offset);
    modifiers[this.axis] = this.property;
    limit[this.axis] = [- this.options.offset, this.max - 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)
    });
  },

  set: function(step){
    this.step = step.limit(0, this.options.steps);
    this.checkStep();
    this.end();
    this.fireEvent('onTick', this.toPosition(this.step));
    return this;
  },

  clickedElement: function(event){
    var position = event.page[this.axis] - this.element.getRelativePosition()[this.axis] - this.half;
    position = position.limit(-this.options.offset, this.max -this.options.offset);
    this.step = this.toStep(position);
    this.checkStep();
    this.end();
    this.fireEvent('onTick', position);
  },

  draggedKnob: function(){
    this.step = this.toStep(this.drag.value.now[this.axis]);
    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){
    return Math.round((position + this.options.offset) / this.max * this.options.steps);
  },

  toPosition: function(step){
    return this.max * step / this.options.steps;
  }

});


/*
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.

Note:
  Scroller requires an XHTML doctype.
*/

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 = $(element);
    switch($type(this.element)){
      case 'window':
        this.element = this.element.document;
        this.listener = $(this.element.body);
      break;
      case 'document': this.listener = $(this.element.body); break;
      case 'element': this.listener = 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 = ($type(this.element) == 'document') ? event.client : event.page;
    if (!this.timer) this.timer = this.scroll.periodical(50, this);
  },

  scroll: function(){
    var size = this.element.getOffsetSize(), 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 = $merge({
      'onload': $empty
    }, properties);
    var script = new Element('script', {'src': source, 'type': 'text/javascript'}).addEvents({
      'load': properties.onload,
      'readystatechange': function(){
        if (this.readyState == 'complete') this.fireEvent('load');
      }
    });
    delete properties.onload;
    return script.setProperties(properties).inject(document.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: 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.pass = $$(elements);
    arguments.callee.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] = arguments.callee.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]);
    }
    return this;
  },

  start: function(obj){
    if (!this.check(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 arguments.callee.parent(from, to);
  }

});


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

License:
  MIT-style license.

Note:
  Accordion requires an XHTML doctype.
*/

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});
    arguments.callee.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);
  }

});