/*
---
MooTools: the javascript framework

web build:
 - http://mootools.net/core/dce97d7a88c57a1b0474a9a90f0687e1

packager build:
 - packager build Core/Core Core/Array Core/String Core/Number Core/Function Core/Object Core/Class Core/Class.Extras Core/JSON

/*
---

name: Core

description: The heart of MooTools.

license: MIT-style license.

copyright: Copyright (c) 2006-2010 [Valerio Proietti](http://mad4milk.net/).

authors: 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)

provides: [Core, MooTools, Type, typeOf, instanceOf, Native]

...
*/

(function(){

this.MooTools = {
	version: '1.3',
	build: 'a3eed692dd85050d80168ec2c708efe901bb7db3'
};

// typeOf, instanceOf

var typeOf = this.typeOf = function(item){
	if (item == null) return 'null';
	if (item.$family) return item.$family();

	if (item.nodeName){
		if (item.nodeType == 1) return 'element';
		if (item.nodeType == 3) return (/\S/).test(item.nodeValue) ? 'textnode' : 'whitespace';
	} else if (typeof item.length == 'number'){
		if (item.callee) return 'arguments';
		if ('item' in item) return 'collection';
	}

	return typeof item;
};

var instanceOf = this.instanceOf = function(item, object){
	if (item == null) return false;
	var constructor = item.$constructor || item.constructor;
	while (constructor){
		if (constructor === object) return true;
		constructor = constructor.parent;
	}
	return item instanceof object;
};

// Function overloading

var Function = this.Function;

var enumerables = true;
for (var i in {toString: 1}) enumerables = null;
if (enumerables) enumerables = ['hasOwnProperty', 'valueOf', 'isPrototypeOf', 'propertyIsEnumerable', 'toLocaleString', 'toString', 'constructor'];

Function.prototype.overloadSetter = function(usePlural){
	var self = this;
	return function(a, b){
		if (a == null) return this;
		if (usePlural || typeof a != 'string'){
			for (var k in a) self.call(this, k, a[k]);
			if (enumerables) for (var i = enumerables.length; i--;){
				k = enumerables[i];
				if (a.hasOwnProperty(k)) self.call(this, k, a[k]);
			}
		} else {
			self.call(this, a, b);
		}
		return this;
	};
};

Function.prototype.overloadGetter = function(usePlural){
	var self = this;
	return function(a){
		var args, result;
		if (usePlural || typeof a != 'string') args = a;
		else if (arguments.length > 1) args = arguments;
		if (args){
			result = {};
			for (var i = 0; i < args.length; i++) result[args[i]] = self.call(this, args[i]);
		} else {
			result = self.call(this, a);
		}
		return result;
	};
};

Function.prototype.extend = function(key, value){
	this[key] = value;
}.overloadSetter();

Function.prototype.implement = function(key, value){
	this.prototype[key] = value;
}.overloadSetter();

// From

var slice = Array.prototype.slice;

Function.from = function(item){
	return (typeOf(item) == 'function') ? item : function(){
		return item;
	};
};

Array.from = function(item){
	if (item == null) return [];
	return (Type.isEnumerable(item) && typeof item != 'string') ? (typeOf(item) == 'array') ? item : slice.call(item) : [item];
};

Number.from = function(item){
	var number = parseFloat(item);
	return isFinite(number) ? number : null;
};

String.from = function(item){
	return item + '';
};

// hide, protect

Function.implement({

	hide: function(){
		this.$hidden = true;
		return this;
	},

	protect: function(){
		this.$protected = true;
		return this;
	}

});

// Type

var Type = this.Type = function(name, object){
	if (name){
		var lower = name.toLowerCase();
		var typeCheck = function(item){
			return (typeOf(item) == lower);
		};

		Type['is' + name] = typeCheck;
		if (object != null){
			object.prototype.$family = (function(){
				return lower;
			}).hide();
			
		}
	}

	if (object == null) return null;

	object.extend(this);
	object.$constructor = Type;
	object.prototype.$constructor = object;

	return object;
};

var toString = Object.prototype.toString;

Type.isEnumerable = function(item){
	return (item != null && typeof item.length == 'number' && toString.call(item) != '[object Function]' );
};

var hooks = {};

var hooksOf = function(object){
	var type = typeOf(object.prototype);
	return hooks[type] || (hooks[type] = []);
};

var implement = function(name, method){
	if (method && method.$hidden) return this;

	var hooks = hooksOf(this);

	for (var i = 0; i < hooks.length; i++){
		var hook = hooks[i];
		if (typeOf(hook) == 'type') implement.call(hook, name, method);
		else hook.call(this, name, method);
	}
	
	var previous = this.prototype[name];
	if (previous == null || !previous.$protected) this.prototype[name] = method;

	if (this[name] == null && typeOf(method) == 'function') extend.call(this, name, function(item){
		return method.apply(item, slice.call(arguments, 1));
	});

	return this;
};

var extend = function(name, method){
	if (method && method.$hidden) return this;
	var previous = this[name];
	if (previous == null || !previous.$protected) this[name] = method;
	return this;
};

Type.implement({

	implement: implement.overloadSetter(),

	extend: extend.overloadSetter(),

	alias: function(name, existing){
		implement.call(this, name, this.prototype[existing]);
	}.overloadSetter(),

	mirror: function(hook){
		hooksOf(this).push(hook);
		return this;
	}

});

new Type('Type', Type);

// Default Types

var force = function(name, object, methods){
	var isType = (object != Object),
		prototype = object.prototype;

	if (isType) object = new Type(name, object);

	for (var i = 0, l = methods.length; i < l; i++){
		var key = methods[i],
			generic = object[key],
			proto = prototype[key];

		if (generic) generic.protect();

		if (isType && proto){
			delete prototype[key];
			prototype[key] = proto.protect();
		}
	}

	if (isType) object.implement(prototype);

	return force;
};

force('String', String, [
	'charAt', 'charCodeAt', 'concat', 'indexOf', 'lastIndexOf', 'match', 'quote', 'replace', 'search',
	'slice', 'split', 'substr', 'substring', 'toLowerCase', 'toUpperCase'
])('Array', Array, [
	'pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift', 'concat', 'join', 'slice',
	'indexOf', 'lastIndexOf', 'filter', 'forEach', 'every', 'map', 'some', 'reduce', 'reduceRight'
])('Number', Number, [
	'toExponential', 'toFixed', 'toLocaleString', 'toPrecision'
])('Function', Function, [
	'apply', 'call', 'bind'
])('RegExp', RegExp, [
	'exec', 'test'
])('Object', Object, [
	'create', 'defineProperty', 'defineProperties', 'keys',
	'getPrototypeOf', 'getOwnPropertyDescriptor', 'getOwnPropertyNames',
	'preventExtensions', 'isExtensible', 'seal', 'isSealed', 'freeze', 'isFrozen'
])('Date', Date, ['now']);

Object.extend = extend.overloadSetter();

Date.extend('now', function(){
	return +(new Date);
});

new Type('Boolean', Boolean);

// fixes NaN returning as Number

Number.prototype.$family = function(){
	return isFinite(this) ? 'number' : 'null';
}.hide();

// Number.random

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

// forEach, each

Object.extend('forEach', function(object, fn, bind){
	for (var key in object){
		if (object.hasOwnProperty(key)) fn.call(bind, object[key], key, object);
	}
});

Object.each = Object.forEach;

Array.implement({

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

	each: function(fn, bind){
		Array.forEach(this, fn, bind);
		return this;
	}

});

// Array & Object cloning, Object merging and appending

var cloneOf = function(item){
	switch (typeOf(item)){
		case 'array': return item.clone();
		case 'object': return Object.clone(item);
		default: return item;
	}
};

Array.implement('clone', function(){
	var i = this.length, clone = new Array(i);
	while (i--) clone[i] = cloneOf(this[i]);
	return clone;
});

var mergeOne = function(source, key, current){
	switch (typeOf(current)){
		case 'object':
			if (typeOf(source[key]) == 'object') Object.merge(source[key], current);
			else source[key] = Object.clone(current);
		break;
		case 'array': source[key] = current.clone(); break;
		default: source[key] = current;
	}
	return source;
};

Object.extend({

	merge: function(source, k, v){
		if (typeOf(k) == 'string') return mergeOne(source, k, v);
		for (var i = 1, l = arguments.length; i < l; i++){
			var object = arguments[i];
			for (var key in object) mergeOne(source, key, object[key]);
		}
		return source;
	},

	clone: function(object){
		var clone = {};
		for (var key in object) clone[key] = cloneOf(object[key]);
		return clone;
	},

	append: function(original){
		for (var i = 1, l = arguments.length; i < l; i++){
			var extended = arguments[i] || {};
			for (var key in extended) original[key] = extended[key];
		}
		return original;
	}

});

// Object-less types

['Object', 'WhiteSpace', 'TextNode', 'Collection', 'Arguments'].each(function(name){
	new Type(name);
});

// Unique ID

var UID = Date.now();

String.extend('uniqueID', function(){
	return (UID++).toString(36);
});



})();


/*
---

name: Array

description: Contains Array Prototypes like each, contains, and erase.

license: MIT-style license.

requires: Type

provides: Array

...
*/

Array.implement({

	invoke: function(methodName){
		var args = Array.slice(arguments, 1);
		return this.map(function(item){
			return item[methodName].apply(item, args);
		});
	},

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

	clean: function(){
		return this.filter(function(item){
			return item != null;
		});
	},

	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++){
			if (i in this) 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 ((i in this) && 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;
	},

	append: function(array){
		this.push.apply(this, array);
		return this;
	},

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

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

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

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

	erase: function(item){
		for (var i = this.length; i--;){
			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 = typeOf(this[i]);
			if (type == 'null') continue;
			array = array.concat((type == 'array' || type == 'collection' || type == 'arguments' || instanceOf(this[i], Array)) ? Array.flatten(this[i]) : this[i]);
		}
		return array;
	},

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

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

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

});




/*
---

name: String

description: Contains String Prototypes like camelCase, capitalize, test, and toInt.

license: MIT-style license.

requires: Type

provides: String

...
*/

String.implement({

	test: function(regex, params){
		return ((typeOf(regex) == 'regexp') ? regex : new RegExp('' + regex, params)).test(this);
	},

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

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

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

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

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

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

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

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

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

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

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

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

});


/*
---

name: Number

description: Contains Number Prototypes like limit, round, times, and ceil.

license: MIT-style license.

requires: Type

provides: Number

...
*/

Number.implement({

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

	round: function(precision){
		precision = Math.pow(10, precision || 0).toFixed(precision < 0 ? -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('each', 'times');

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


/*
---

name: Function

description: Contains Function Prototypes like create, bind, pass, and delay.

license: MIT-style license.

requires: Type

provides: Function

...
*/

Function.extend({

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

});

Function.implement({

	attempt: function(args, bind){
		try {
			return this.apply(bind, Array.from(args));
		} catch (e){}
		
		return null;
	},

	bind: function(bind){
		var self = this,
			args = (arguments.length > 1) ? Array.slice(arguments, 1) : null;
		
		return function(){
			if (!args && !arguments.length) return self.call(bind);
			if (args && arguments.length) return self.apply(bind, args.concat(Array.from(arguments)));
			return self.apply(bind, args || arguments);
		};
	},

	pass: function(args, bind){
		var self = this;
		if (args != null) args = Array.from(args);
		return function(){
			return self.apply(bind, args || arguments);
		};
	},

	delay: function(delay, bind, args){
		return setTimeout(this.pass(args, bind), delay);
	},

	periodical: function(periodical, bind, args){
		return setInterval(this.pass(args, bind), periodical);
	}

});




/*
---

name: Object

description: Object generic methods

license: MIT-style license.

requires: Type

provides: [Object, Hash]

...
*/


Object.extend({

	subset: function(object, keys){
		var results = {};
		for (var i = 0, l = keys.length; i < l; i++){
			var k = keys[i];
			results[k] = object[k];
		}
		return results;
	},

	map: function(object, fn, bind){
		var results = {};
		for (var key in object){
			if (object.hasOwnProperty(key)) results[key] = fn.call(bind, object[key], key, object);
		}
		return results;
	},

	filter: function(object, fn, bind){
		var results = {};
		Object.each(object, function(value, key){
			if (fn.call(bind, value, key, object)) results[key] = value;
		});
		return results;
	},

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

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

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

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

	getLength: function(object){
		return Object.keys(object).length;
	},

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

	contains: function(object, value){
		return Object.keyOf(object, value) != null;
	},

	toQueryString: function(object, base){
		var queryString = [];

		Object.each(object, function(value, key){
			if (base) key = base + '[' + key + ']';
			var result;
			switch (typeOf(value)){
				case 'object': result = Object.toQueryString(value, key); break;
				case 'array':
					var qs = {};
					value.each(function(val, i){
						qs[i] = val;
					});
					result = Object.toQueryString(qs, key);
				break;
				default: result = key + '=' + encodeURIComponent(value);
			}
			if (value != null) queryString.push(result);
		});

		return queryString.join('&');
	}

});





/*
---

name: Class

description: Contains the Class Function for easily creating, extending, and implementing reusable Classes.

license: MIT-style license.

requires: [Array, String, Function, Number]

provides: Class

...
*/

(function(){

var Class = this.Class = new Type('Class', function(params){
	if (instanceOf(params, Function)) params = {initialize: params};

	var newClass = function(){
		reset(this);
		if (newClass.$prototyping) return this;
		this.$caller = null;
		var value = (this.initialize) ? this.initialize.apply(this, arguments) : this;
		this.$caller = this.caller = null;
		return value;
	}.extend(this).implement(params);

	newClass.$constructor = Class;
	newClass.prototype.$constructor = newClass;
	newClass.prototype.parent = parent;

	return newClass;
});

var parent = function(){
	if (!this.$caller) throw new Error('The method "parent" cannot be called.');
	var name = this.$caller.$name,
		parent = this.$caller.$owner.parent,
		previous = (parent) ? parent.prototype[name] : null;
	if (!previous) throw new Error('The method "' + name + '" has no parent.');
	return previous.apply(this, arguments);
};

var reset = function(object){
	for (var key in object){
		var value = object[key];
		switch (typeOf(value)){
			case 'object':
				var F = function(){};
				F.prototype = value;
				object[key] = reset(new F);
			break;
			case 'array': object[key] = value.clone(); break;
		}
	}
	return object;
};

var wrap = function(self, key, method){
	if (method.$origin) method = method.$origin;
	var wrapper = function(){
		if (method.$protected && this.$caller == null) throw new Error('The method "' + key + '" cannot be called.');
		var caller = this.caller, current = this.$caller;
		this.caller = current; this.$caller = wrapper;
		var result = method.apply(this, arguments);
		this.$caller = current; this.caller = caller;
		return result;
	}.extend({$owner: self, $origin: method, $name: key});
	return wrapper;
};

var implement = function(key, value, retain){
	if (Class.Mutators.hasOwnProperty(key)){
		value = Class.Mutators[key].call(this, value);
		if (value == null) return this;
	}

	if (typeOf(value) == 'function'){
		if (value.$hidden) return this;
		this.prototype[key] = (retain) ? value : wrap(this, key, value);
	} else {
		Object.merge(this.prototype, key, value);
	}

	return this;
};

var getInstance = function(klass){
	klass.$prototyping = true;
	var proto = new klass;
	delete klass.$prototyping;
	return proto;
};

Class.implement('implement', implement.overloadSetter());

Class.Mutators = {

	Extends: function(parent){
		this.parent = parent;
		this.prototype = getInstance(parent);
	},

	Implements: function(items){
		Array.from(items).each(function(item){
			var instance = new item;
			for (var key in instance) implement.call(this, key, instance[key], true);
		}, this);
	}
};

})();


/*
---

name: Class.Extras

description: Contains Utility Classes that can be implemented into your own Classes to ease the execution of many common tasks.

license: MIT-style license.

requires: Class

provides: [Class.Extras, Chain, Events, Options]

...
*/

(function(){

this.Chain = new Class({

	$chain: [],

	chain: function(){
		this.$chain.append(Array.flatten(arguments));
		return this;
	},

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

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

});

var removeOn = function(string){
	return string.replace(/^on([A-Z])/, function(full, first){
		return first.toLowerCase();
	});
};

this.Events = new Class({

	$events: {},

	addEvent: function(type, fn, internal){
		type = removeOn(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){
		type = removeOn(type);
		var events = this.$events[type];
		if (!events) return this;
		args = Array.from(args);
		events.each(function(fn){
			if (delay) fn.delay(delay, this, args);
			else fn.apply(this, args);
		}, this);
		return this;
	},
	
	removeEvent: function(type, fn){
		type = removeOn(type);
		var events = this.$events[type];
		if (events && !fn.internal){
			var index =  events.indexOf(fn);
			if (index != -1) delete events[index];
		}
		return this;
	},

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

});

this.Options = new Class({

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

});

})();


/*
---

name: JSON

description: JSON encoder and decoder.

license: MIT-style license.

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

requires: [Array, String, Number, Function]

provides: JSON

...
*/

if (!this.JSON) this.JSON = {};



Object.append(JSON, {

	$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);
	},

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

	decode: function(string, secure){
		if (typeOf(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 + ')');
	}

});