(function () {
				var m = {
												'\b': '\\b',
												'\t': '\\t',
												'\n': '\\n',
												'\f': '\\f',
												'\r': '\\r',
												'"' : '\\"',
												'\\': '\\\\'
								},
								s = {
												array: function (x) {
																var a = ['['], b, f, i, l = x.length, v;
																for (i = 0; i < l; i += 1) {
																				v = x[i];
																				f = s[typeof v];
																				if (f) {
																								v = f(v);
																								if (typeof v == 'string') {
																												if (b) {
																																a[a.length] = ',';
																												}
																												a[a.length] = v;
																												b = true;
																								}
																				}
																}
																a[a.length] = ']';
																return a.join('');
												},
												'boolean': function (x) {
																return String(x);
												},
												'null': function (x) {
																return "null";
												},
												number: function (x) {
																return isFinite(x) ? String(x) : 'null';
												},
												object: function (x) {
																if (x) {
																				if (x instanceof Array) {
																								return s.array(x);
																				}
																				var a = ['{'], b, f, i, v;
																				for (i in x) {
																								v = x[i];
																								f = s[typeof v];
																								if (f) {
																												v = f(v);
																												if (typeof v == 'string') {
																																if (b) {
																																				a[a.length] = ',';
																																}
																																a.push(s.string(i), ':', v);
																																b = true;
																												}
																								}
																				}
																				a[a.length] = '}';
																				return a.join('');
																}
																return 'null';
												},
												string: function (x) {
																if (/["\\\x00-\x1f]/.test(x)) {
																				x = x.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 '"' + x + '"';
												}
								};

				Object.prototype.json_encode = function () {
								return s.object(this);
				};

				Array.prototype.json_encode = function () {
								return s.array(this);
				};
})();

String.prototype.json_decode = function () {
				try {
								return (/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.test(this)) &&
												eval('(' + this + ')');
				} catch (e) {
								return false;
				}
};