object.create.js

// Object.create Partial Polyfill
// Support for second parameter is non-standard
if (typeof Object.create !== 'function') {
 Object.create = function(o, props) {
  var instance, prop;
  // Create new object whose prototype is o
  function F() {}
  F.prototype = o;
  instance = new F();
  // Copy properties of second parameter into new object
  if (typeof(props) === "object") {
   for (prop in props) {
    if (props.hasOwnProperty((prop))) {
     // Even though we don't support all of the functionality that the second
     // parameter would normally have, we respect the format for the object
     // passed as that second parameter its specification.
     instance[prop] = props[prop].value;
    }
   }
  }
  // Return new object
  return instance;
 };
}