/* vi:set et ts=4 sw=4 softtabstop=4: */

info=console.info;

var DOMPrototype = true;

function startExtendDOM() { 
    if(typeof(Node) == "undefined") {
        Node = { prototype: {} };
        DOMPrototype = false;
    }
}

function extendElement(n) {
    for(k in Node.prototype)
        n[k] = Node.prototype[k];
    var oldCloneNode = n.cloneNode;
    n.cloneNode = function(x) { return extendElement(oldCloneNode(x)); };
    return n;
}

function endExtendDOM() {
    if(!DOMPrototype) {
        window.onload = function() {
            elems = document.getElementsByTagName("*");
            for(var i = 0; i < elems.length; i++)
                extendElement(elems[i]);
            var oldCreateElement = document.createElement;
            document.createElement = function(x) { return extendElement(oldCreateElement(x)); };
        };
    }
}

/**************/ startExtendDOM();

Node.prototype.foo = function() {
   console.info(this.tagName);
}

/**************/ endExtendDOM();

oldload = window.onload; 
window.onload = function() {
  if(oldload) oldload();

  h1 = document.getElementsByTagName("h1")[0];
  h2 = document.createElement('h2');
  h2b = h2.cloneNode(false);

  h1.foo();
  h2.foo();
  h2b.foo();
}