subclass array

gistfile1.txt

//http://dean.edwards.name/weblog/2006/11/hooray/
// create an <iframe>
var iframe = document.createElement("iframe");
iframe.style.display = "none";
document.body.appendChild(iframe);

// write a script into the <iframe> and steal its Array object
frames[frames.length - 1].document.write(
  "<script>parent.Array2 = Array;<\/script>"
);

alert(Array2 == Array); // => false

Array2.prototype.each = function(iterator) {
  // iterate
};