(function (s) {
  var m = {'\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"' : '\\"', '\\': '\\\\'};

  s.parseJSON = function (filter) {

    try {
      if (/^("(\\.|[^"\\\n\r])*?"|[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t])+?$/.
        test(this)) {
//"
          var j = eval('(' + this + ')');

          if (typeof filter === 'function') {

            function walk(k, v) {
              if (v && typeof v === 'object') {
                for (var i in v) {
                  if (v.hasOwnProperty(i)) {
                    v[i] = walk(i, v[i]);
                  }
                }
              }
              return filter(k, v);
            }

            j = walk('', j);
          }
          return j;
        }
      } catch (e) {
		var i="";
      }
      throw new SyntaxError("parseJSON");
    };
  }
) (String.prototype);