var prototypeDefault = {
  'try': function(arg) {
    if (typeof this[arg] == "undefined") return false;
    return this[arg];
  }
}

if (typeof Object.create !== 'function') {
  Object.create = function (o) {
    function F() {};
    for(var method in prototypeDefault) o[method] = prototypeDefault[method];
    F.prototype = o;
    return new F();
  };
}

if(Object.defineProperty) {
  for(var method in prototypeDefault) {
    Object.defineProperty(Object.prototype, method, {
      enumerable: false, value: prototypeDefault[method]
    });
  }
}