if (!this.JSON) {
	JSON = function () {
		function f(n) {
			return n < 10 ? '0' + n : n;
		}
		Date.prototype.toJSON = function () {
			return this.getUTCFullYear()   + '-' +
				 f(this.getUTCMonth() + 1) + '-' +
				 f(this.getUTCDate())	  + 'T' +
				 f(this.getUTCHours())	 + ':' +
				 f(this.getUTCMinutes())   + ':' +
				 f(this.getUTCSeconds())   + 'Z';
		};
		var m = {
			'\b': '\\b',
			'\t': '\\t',
			'\n': '\\n',
			'\f': '\\f',
			'\r': '\\r',
			'"' : '\\"',
			'\\': '\\\\'
		};
		function stringify(value, whitelist) {
			var a,
				i,
				k,
				l,
				r = /["\\\x00-\x1f\x7f-\x9f]/g,
				v;
			switch (typeof value) {
			case 'string':
				return r.test(value) ?
					'"' + value.replace(r, function (a) {
						var c = m[a];
						if (c) {
							return c;
						}
						c = a.charCodeAt();
						return '\\u00' + Math.floor(c / 16).toString(16) +
												   (c % 16).toString(16);
					}) + '"' :
					'"' + value + '"';
			case 'number':
				return isFinite(value) ? String(value) : 'null';
			case 'boolean':
			case 'null':
				return String(value);
			case 'object':
				if (!value) {
					return 'null';
				}
				if (typeof value.toJSON === 'function') {
					return stringify(value.toJSON());
				}
				a = [];
				if (typeof value.length === 'number' &&
						!(value.propertyIsEnumerable('length'))) {
					l = value.length;
					for (i = 0; i < l; i += 1) {
						a.push(stringify(value[i], whitelist) || 'null');
					}
					return '[' + a.join(',') + ']';
				}
				if (whitelist) {
					l = whitelist.length;
					for (i = 0; i < l; i += 1) {
						k = whitelist[i];
						if (typeof k === 'string') {
							v = stringify(value[k], whitelist);
							if (v) {
								a.push(stringify(k) + ':' + v);
							}
						}
					}
				} else {
					for (k in value) {
						if (typeof k === 'string') {
							v = stringify(value[k], whitelist);
							if (v) {
								a.push(stringify(k) + ':' + v);
							}
						}
					}
				}
				return '{' + a.join(',') + '}';
			}
		}
		return {
			stringify: stringify,
			parse: function (text, filter) {
				var j;
				function walk(k, v) {
					var i, n;
					if (v && typeof v === 'object') {
						for (i in v) {
							if (Object.prototype.hasOwnProperty.apply(v, [i])) {
								n = walk(i, v[i]);
								if (n !== undefined) {
									v[i] = n;
								}
							}
						}
					}
					return filter(k, v);
				}
				if (/^[\],:{}\s]*$/.test(text.replace(/\\./g, '@').
replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(:?[eE][+\-]?\d+)?/g, ']').
replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
					j = eval('(' + text + ')');
					return typeof filter === 'function' ? walk('', j) : j;
				}
				throw new SyntaxError('parseJSON');
			}
		};
	}();
}