JavaScript: Clone Object

gistfile1.js

// Taken from http://stackoverflow.com/questions/728360/copying-an-object-in-javascript
clone = function(obj) {
  if (null == obj || "object" != typeof obj) return obj;
  var copy = obj.constructor();
  for (var attr in obj) {
    if (obj.hasOwnProperty(attr)) copy[attr] = obj[attr];
  }
  return copy;
}