JSON = new (function(){
    var useHasOwn = {}.hasOwnProperty ? true : false;
    var pad = function(n) {
        return n < 10 ? "0" + n : n;
    };
    var m = {
        "\b": '\\b',
        "\t": '\\t',
        "\n": '\\n',
        "\f": '\\f',
        "\r": '\\r',
        '"' : '\\"',
        "\\": '\\\\'
    };
    var encodeString = function(s){
        if (/["\\\x00-\x1f]/.test(s)) {
            return '"' + s.replace(/([\x00-\x1f\\"])/g, function(a, b) {
                var c = m[b];
                if(c){
                    return c;
                }
                c = b.charCodeAt();
                return "\\u00" +
                    Math.floor(c / 16).toString(16) +
                    (c % 16).toString(16);
            }) + '"';
        }
        return '"' + s + '"';
    };
    var encodeArray = function(o){
        var a = ["["], b, i, l = o.length, v;
            for (i = 0; i < l; i += 1) {
                v = o[i];
                switch (typeof v) {
                    case "undefined":
                    case "function":
                    case "unknown":
                        break;
                    default:
                        if (b) {
                            a.push(',');
                        }
                        a.push(v === null ? "null" : JSON.encode(v));
                        b = true;
                }
            }
            a.push("]");
            return a.join("");
    };
    var encodeDate = function(o){
        return '"' + o.getFullYear() + "-" +
                pad(o.getMonth() + 1) + "-" +
                pad(o.getDate()) + "T" +
                pad(o.getHours()) + ":" +
                pad(o.getMinutes()) + ":" +
                pad(o.getSeconds()) + '"';
    };
    this.encode = function(o){
        if(typeof o == "undefined" || o === null){
            return "null";
        }else if(o instanceof Array){
            return encodeArray(o);
        }else if(o instanceof Date){
            return encodeDate(o);
        }else if(typeof o == "string"){
            return encodeString(o);
        }else if(typeof o == "number"){
            return isFinite(o) ? String(o) : "null";
        }else if(typeof o == "boolean"){
            return String(o);
        }else {
            var a = ["{"], b, i, v;
            for (i in o) {
                if(!useHasOwn || o.hasOwnProperty(i)) {
                    v = o[i];
                    switch (typeof v) {
                    case "undefined":
                    case "function":
                    case "unknown":
                        break;
                    default:
                        if(b){
                            a.push(',');
                        }
                        a.push(this.encode(i), ":",
                                v === null ? "null" : this.encode(v));
                        b = true;
                    }
                }
            }
            a.push("}");
            return a.join("");
        }
    };
    this.decode = function(json){
        return eval("(" + json + ')');
    };
})();