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/*
Script: Core.js
	Mootools - My Object Oriented javascript.

License:
	MIT-style license.

MooTools Copyright:
	copyright (c) 2007 Valerio Proietti, <http://mad4milk.net>

MooTools Credits:
	- Class is slightly based on Base.js <http://dean.edwards.name/weblog/2006/03/base/> (c) 2006 Dean Edwards, License <http://creativecommons.org/licenses/LGPL/2.1/>
	- Some functions are inspired by those found in prototype.js <http://prototype.conio.net/> (c) 2005 Sam Stephenson sam [at] conio [dot] net, MIT-style license
	- Documentation by Aaron Newton (aaron.newton [at] cnet [dot] com) and Valerio Proietti.
*/

var MooTools = {
	version: '1.11'
};

/* Section: Core Functions */

/*
Function: $defined
	Returns true if the passed in value/object is defined, that means is not null or undefined.

Arguments:
	obj - object to inspect
*/

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

/*
Function: $type
	Returns the type of object that matches the element passed in.

Arguments:
	obj - the object to inspect.

Example:
	>var myString = 'hello';
	>$type(myString); //returns "string"

Returns:
	'element' - if obj is a DOM element node
	'textnode' - if obj is a DOM text node
	'whitespace' - if obj is a DOM whitespace node
	'arguments' - if obj is an arguments object
	'object' - if obj is an object
	'string' - if obj is a string
	'number' - if obj is a number
	'boolean' - if obj is a boolean
	'function' - if obj is a function
	'regexp' - if obj is a regular expression
	'class' - if obj is a Class. (created with new Class, or the extend of another class).
	'collection' - if obj is a native htmlelements collection, such as childNodes, getElementsByTagName .. etc.
	false - (boolean) if the object is not defined or none of the above.
*/

/*
Function: $merge
	merges a number of objects recursively without referencing them or their sub-objects.

Arguments:
	any number of objects.

Example:
	>var mergedObj = $merge(obj1, obj2, obj3);
	>//obj1, obj2, and obj3 are unaltered
*/

/*
Function: $extend
	Copies all the properties from the second passed object to the first passed Object.
	If you do myWhatever.extend = $extend the first parameter will become myWhatever, and your extend function will only need one parameter.

Example:
	(start code)
	var firstOb = {
		'name': 'John',
		'lastName': 'Doe'
	};
	var secondOb = {
		'age': '20',
		'sex': 'male',
		'lastName': 'Dorian'
	};
	$extend(firstOb, secondOb);
	//firstOb will become:
	{
		'name': 'John',
		'lastName': 'Dorian',
		'age': '20',
		'sex': 'male'
	};
	(end)

Returns:
	The first object, extended.
*/

var $extend = function(){
	var args = arguments;
	if (!args[1]) args = [this, args[0]];
	for (var property in args[1]) args[0][property] = args[1][property];
	return args[0];
};

/*
Function: $native
	Will add a .extend method to the objects passed as a parameter, but the property passed in will be copied to the object's prototype only if non previously existent.
	Its handy if you dont want the .extend method of an object to overwrite existing methods.
	Used automatically in MooTools to implement Array/String/Function/Number methods to browser that dont support them whitout manual checking.

Arguments:
	a number of classes/native javascript objects

$native.generic = function(prop){
	return function(bind){
		return this.prototype[prop].apply(bind, Array.prototype.slice.call(arguments, 1));
	};
};

$native(Function, Array, String, Number);

/*
Function: $chk
	Returns true if the passed in value/object exists or is 0, otherwise returns false.
	Useful to accept zeroes.

Arguments:
	obj - object to inspect
*/

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

/*
Function: $pick
	Returns the first object if defined, otherwise returns the second.

Arguments:
	obj - object to test
	picked - the default to return

Example:
	(start code)
		function say(msg){
			alert($pick(msg, 'no meessage supplied'));
		}
	(end)
*/

function $pick(obj, picked){
	return $defined(obj) ? obj : picked;
};

/*
Function: $random
	Returns a random integer number between the two passed in values.

Arguments:
	min - integer, the minimum value (inclusive).
	max - integer, the maximum value (inclusive).

Returns:
	a random integer between min and max.
*/

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

/*
Function: $time
	Returns the current timestamp

Returns:
	a timestamp integer.
*/

function $time(){
	return new Date().getTime();
};

/*
Function: $clear
	clears a timeout or an Interval.

Returns:
	null

Arguments:
	timer - the setInterval or setTimeout to clear.

Example:
	>var myTimer = myFunction.delay(5000); //wait 5 seconds and execute my function.
	>myTimer = $clear(myTimer); //nevermind

See also:
	<Function.delay>, <Function.periodical>
*/

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

/*
Class: Abstract
	Abstract class, to be used as singleton. Will add .extend to any object

Arguments:
	an object

Returns:
	the object with an .extend property, equivalent to <$extend>.
*/

var Abstract = function(obj){
	obj = obj || {};
	obj.extend = $extend;
	return obj;
};

//window, document

var Window = new Abstract(window);
var Document = new Abstract(document);
document.head = document.getElementsByTagName('head')[0];

/*
Class: window
	Some properties are attached to the window object by the browser detection.
	
Note:
	browser detection is entirely object-based. We dont sniff.

Properties:
	window.ie - will be set to true if the current browser is internet explorer (any).
	window.ie6 - will be set to true if the current browser is internet explorer 6.
	window.ie7 - will be set to true if the current browser is internet explorer 7.
	window.gecko - will be set to true if the current browser is Mozilla/Gecko.
	window.webkit - will be set to true if the current browser is Safari/Konqueror.
	window.webkit419 - will be set to true if the current browser is Safari2 / webkit till version 419.
	window.webkit420 - will be set to true if the current browser is Safari3 (Webkit SVN Build) / webkit over version 419.
	window.opera - is set to true by opera itself.
*/

window.xpath = !!(document.evaluate);
if (window.ActiveXObject) window.ie = window[window.XMLHttpRequest ? 'ie7' : 'ie6'] = true;
else if (document.childNodes && !document.all && !navigator.taintEnabled) window.webkit = window[window.xpath ? 'webkit420' : 'webkit419'] = true;
else if (document.getBoxObjectFor != null) window.gecko = true;

/*compatibility*/

window.khtml = window.webkit;

Object.extend = $extend;

/*end compatibility*/

//htmlelement

if (typeof HTMLElement == 'undefined'){
	var HTMLElement = function(){};
	if (window.webkit) document.createElement("iframe"); //fixes safari
	HTMLElement.prototype = (window.webkit) ? window["[[DOMElement.prototype]]"] : {};
}
HTMLElement.prototype.htmlElement = function(){};

//enables background image cache for internet explorer 6

if (window.ie6) try {document.execCommand("BackgroundImageCache", false, true);} catch(e){};

/*
Script: Class.js
	Contains the Class Function, aims to ease the creation of reusable Classes.

License:
	MIT-style license.
*/

/*
Class: Class
	The base class object of the <http://mootools.net> framework.
	Creates a new class, its initialize method will fire upon class instantiation.
	Initialize wont fire on instantiation when you pass *null*.

Arguments:
	properties - the collection of properties that apply to the class.

Example:
	(start code)
	var Cat = new Class({
		initialize: function(name){
			this.name = name;
		}
	});
	var myCat = new Cat('Micia');
	alert(myCat.name); //alerts 'Micia'
	(end)
*/

var Class = function(properties){
	var klass = function(){
		return (arguments[0] !== null && this.initialize && $type(this.initialize) == 'function') ? this.initialize.apply(this, arguments) : this;
	};
	$extend(klass, this);
	klass.prototype = properties;
	klass.constructor = Class;
	return klass;
};

/*
Property: empty
	Returns an empty function
*/

Class.empty = function(){};

Class.prototype = {

/*
	Property: extend
		Returns the copy of the Class extended with the passed in properties.

Arguments:
		properties - the properties to add to the base class in this new Class.

Example:
		(start code)
		var Animal = new Class({
			initialize: function(age){
				this.age = age;
			}
		});
		var Cat = Animal.extend({
			initialize: function(name, age){
				this.parent(age); //will call the previous initialize;
				this.name = name;
			}
		});
		var myCat = new Cat('Micia', 20);
		alert(myCat.name); //alerts 'Micia'
		alert(myCat.age); //alerts 20
		(end)
	*/

extend: function(properties){
		var proto = new this(null);
		for (var property in properties){
			var pp = proto[property];
			proto[property] = Class.Merge(pp, properties[property]);
		}
		return new Class(proto);
	},

/*
	Property: implement
		Implements the passed in properties to the base Class prototypes, altering the base class, unlike <Class.extend>.

Arguments:
		properties - the properties to add to the base class.

Example:
		(start code)
		var Animal = new Class({
			initialize: function(age){
				this.age = age;
			}
		});
		Animal.implement({
			setName: function(name){
				this.name = name
			}
		});
		var myAnimal = new Animal(20);
		myAnimal.setName('Micia');
		alert(myAnimal.name); //alerts 'Micia'
		(end)
	*/

implement: function(){
		for (var i = 0, l = arguments.length; i < l; i++) $extend(this.prototype, arguments[i]);
	}

};

//internal

Class.Merge = function(previous, current){
	if (previous && previous != current){
		var type = $type(current);
		if (type != $type(previous)) return current;
		switch(type){
			case 'function':
				var merged = function(){
					this.parent = arguments.callee.parent;
					return current.apply(this, arguments);
				};
				merged.parent = previous;
				return merged;
			case 'object': return $merge(previous, current);
		}
	}
	return current;
};

/*
Script: Array.js
	Contains Array prototypes, <$A>, <$each>

License:
	MIT-style license.
*/

/*
Class: Array
	A collection of The Array Object prototype methods.
*/

//custom methods

Array.extend({

/*
	Property: forEach
		Iterates through an array; This method is only available for browsers without native *forEach* support.
		For more info see <http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Array:forEach>

*forEach* executes the provided function (callback) once for each element present in the array. callback is invoked only for indexes of the array which have assigned values; it is not invoked for indexes which have been deleted or which have never been assigned values.