(function($){
	function toIntegersAtLease(n){
		return n < 10 ? '0' + n : n;
	}
	Date.prototype.toJSON = function(date){
		return this.getUTCFullYear() + '-' +
		toIntegersAtLease(this.getUTCMonth()) +
		'-' +
		toIntegersAtLease(this.getUTCDate());
	};
	var escapeable = /["\\\x00-\x1f\x7f-\x9f]/g;
	var meta = {
		'\b': '\\b',
		'\t': '\\t',
		'\n': '\\n',
		'\f': '\\f',
		'\r': '\\r',
		'"': '\\"',
		'\\': '\\\\'
	};
	$.quoteString = function(string){
		if (escapeable.test(string)) {
			return '"' +
			string.replace(escapeable, function(a){
				var c = meta[a];
				if (typeof c === 'string') {
					return c;
				}
				c = a.charCodeAt();
				return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16);
			}) +
			'"';
		}
		return '"' + string + '"';
	};
	$.toJSON = function(o, compact){
		var type = typeof(o);

		if (o != null && type == "object" && typeof o.toJSON == "function") 
			return o.toJSON(compact);

		if (type == "undefined") 
			return "undefined";
		else 
			if (type == "number" || type == "boolean") 
				return o + "";
			else 
				if (o === null) 
					return "null";
		if (type == "string") {
			return $.quoteString(o);
		}
		if (type != "function" && typeof(o.length) == "number") {
			var ret = [];
			for (var i = 0; i < o.length; i++) {
				ret.push($.toJSON(o[i], compact));
			}
			if (compact) 
				return "[" + ret.join(",") + "]";
			else 
				return "[" + ret.join(", ") + "]";
		}

		if (type == "function") {
			throw new TypeError("Unable to convert object of type 'function' to json.");
		}
		
		
		var ret = [];
		for (var k in o) {
			var name;
			type = typeof(k);
			if (type == "number") 
				name = '"' + k + '"';
			else 
				if (type == "string") 
					name = $.quoteString(k);
				else 
					continue;
			if ( o[k] == undefined )
				continue;
				
			var val = $.toJSON(o[k], compact);
			if (typeof(val) != "string") {
				continue;
			}
			if (compact) 
				ret.push(name + ":" + val);
			else 
				ret.push(name + ": " + val);
		}
		return "{" + ret.join(", ") + "}";
	};
	$.compactJSON = function(o){
		return $.toJSON(o, true);
	};
	$.evalJSON = function(src){
		return eval("(" + src + ")");
	};
	$.secureEvalJSON = function(src){
		var filtered = src;
		filtered = filtered.replace(/\\["\\\/bfnrtu]/g, '@');
		filtered = filtered.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
		filtered = filtered.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
		if (/^[\],:{}\s]*$/.test(filtered)) 
			return eval("(" + src + ")");
		else 
			throw new SyntaxError("Error parsing JSON, source is not valid.");
	};
})(jQuery);