JSON = new function(){
	this.decode = function(){
		var	filter, result, self, tmp;
		if($$("toString")) {
			switch(arguments.length){
				case	2:
					self = arguments[0];
					filter = arguments[1];
					break;
				case	1:
					if($[typeof arguments[0]](arguments[0]) === Function) {
						self = this;
						filter = arguments[0];
					}
					else
						self = arguments[0];
					break;
				default:
					self = this;
					break;
			};
			if(rc.test(self)){
				try{
					result = e("(".concat(self, ")"));
					if(filter && result !== null && (tmp = $[typeof result](result)) && (tmp === Array || tmp === Object)){
						for(self in result)
							result[self] = v(self, result) ? filter(self, result[self]) : result[self];
					}
				}
				catch(z){}
			}
			else {
				throw new JSONError("bad data");
			}
		};
		return result;
	};

	this.encode = function(){
		var	self = arguments.length ? arguments[0] : this,
			result, tmp;
		if(self === null)
			result = "null";
		else if(self !== undefined && (tmp = $[typeof self](self))) {
			switch(tmp){
				case	Array:
					result = [];
					for(var	i = 0, j = 0, k = self.length; j < k; j++) {
						if(self[j] !== undefined && (tmp = JSON.encode(self[j])))
							result[i++] = tmp;
					};
					result = "[".concat(result.join(","), "]");
					break;
				case	Boolean:
					result = String(self);
					break;
				case	Date:
					result = '"'.concat(self.getFullYear(), '-', d(self.getMonth() + 1), '-', d(self.getDate()), 'T', d(self.getHours()), ':', d(self.getMinutes()), ':', d(self.getSeconds()), '"');
					break;
				case	Function:
					break;
				case	Number:
					result = isFinite(self) ? String(self) : "null";
					break;
				case	String:
					result = '"'.concat(self.replace(rs, s).replace(ru, u), '"');
					break;
				default:
					var	i = 0, key;
					result = [];
					for(key in self) {
						if(self[key] !== undefined && (tmp = JSON.encode(self[key])))
							result[i++] = '"'.concat(key.replace(rs, s).replace(ru, u), '":', tmp);
					};
					result = "{".concat(result.join(","), "}");
					break;
			}
		};
		return result;
	};
	this.toDate = function(){
		var	self = arguments.length ? arguments[0] : this,
			result;
		if(rd.test(self)){
			result = new Date;
			result.setHours(i(self, 11, 2));
			result.setMinutes(i(self, 14, 2));
			result.setSeconds(i(self, 17, 2));
			result.setMonth(i(self, 5, 2) - 1);
			result.setDate(i(self, 8, 2));
			result.setFullYear(i(self, 0, 4));
		}
		else if(rt.test(self))
			result = new Date(self * 1000);
		return result;
	};
	var	c = {"\b":"b","\t":"t","\n":"n","\f":"f","\r":"r",'"':'"',"\\":"\\","/":"/"},
		d = function(n){return n<10?"0".concat(n):n},
		e = function(c,f,e){e=eval;delete eval;if(typeof eval==="undefined")eval=e;f=eval(""+c);eval=e;return f},
		i = function(e,p,l){return 1*e.substr(p,l)},
		p = ["","000","00","0",""],
		rc = null,
		rd = /^[0-9]{4}\-[0-9]{2}\-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}$/,
		rs = /(\x5c|\x2F|\x22|[\x0c-\x0d]|[\x08-\x0a])/g,
		rt = /^([0-9]+|[0-9]+[,\.][0-9]{1,3})$/,
		ru = /([\x00-\x07]|\x0b|[\x0e-\x1f])/g,
		s = function(i,d){return "\\".concat(c[d])},
		u = function(i,d){
			var	n=d.charCodeAt(0).toString(16);
			return "\\u".concat(p[n.length],n)
		},
		v = function(k,v){return $[typeof result](result)!==Function&&(v.hasOwnProperty?v.hasOwnProperty(k):v.constructor.prototype[k]!==v[k])},
		$ = {
			"boolean":function(){return Boolean},
			"function":function(){return Function},
			"number":function(){return Number},
			"object":function(o){return o instanceof o.constructor?o.constructor:null},
			"string":function(){return String},
			"undefined":function(){return null}
		},
		$$ = function(m){
			function $(c,t){t=c[m];delete c[m];try{e(c)}catch(z){c[m]=t;return 1}};
			return $(Array)&&$(Object)
		};
	try{rc=new RegExp('^("(\\\\.|[^"\\\\\\n\\r])*?"|[,:{}\\[\\]0-9.\\-+Eaeflnr-u \\n\\r\\t])+?$')}
	catch(z){rc=/^(true|false|null|\[.*\]|\{.*\}|".*"|\d+|\d+\.\d+)$/}
};

var Cache = new function (){
	this.name = 'data';
	this.loaded = null;
	
	// private methods
	this._load = function (){
		if (this.loaded == null) {
			var raw = Cache.get(Cache.name);
			if (raw != null) 
				var d = eval('('+raw+')');
			else 
				var d = {};
			this.loaded = d;
		}
		return this.loaded;
	}
	this._save = function (data){
		Cache.set(Cache.name, JSON.encode(data));
		this.loaded = data;
	}
	
	// public methods
	this.Save = function (name, value, timestamp){
		if (timestamp==null) timestamp = 60*10;
		var d = this._load();
		d[name] = {"v":value,"t":(new Date().getTime()/1000 + timestamp)};
		this._save(d);
	}
	this.Load = function (name){
		var d = this._load();
		if (d[name] == null) return null;
		if (d[name]["t"] < new Date().getTime()/1000){
			// cache expired
			return null;
		}
		return d[name]["v"];
	}
	this.Clear = function (name){
		var d = this._load();
		d[name] = null;
		this._save(d);
	}
	this.set = function (name, value){
		document.cookie = name + " = " + escape(value) + "; expires=01/01/2017 00:00:00; path=/";
	}
	this.get = function (name) {
		var prefix = name + "=";
		var start_ind = document.cookie.indexOf(prefix);
		if (start_ind == -1) return null;
		var end_ind = document.cookie.indexOf(";", start_ind + prefix.length);
		if (end_ind == -1) end_ind = document.cookie.length;
		return unescape(document.cookie.substring(start_ind + prefix.length, end_ind))
	}
}