/* These functions are adapted from one written by Simon Willison 
   (http://www.incutio.com/) and taken from Jeremy Keith's excellent book 
   "DOM Scripting", Friends of Ed, 2005
*/
function addLoadEvent(p_fn) {
  var l_fnOldOnLoad = window.onload;
  if(typeof window.onload != "function") {
    window.onload = p_fn;
  }
  else {
    window.onload = function () {
      l_fnOldOnLoad();
      p_fn();
    }
  }
}

function addResizeEvent(p_fn) {
  var l_fnOldOnResize = window.onresize;
  if(typeof window.onresize != "function") {
    window.onresize = p_fn;
  }
  else {
    window.onresize = function () {
      l_fnOldOnResize();
      p_fn();
    }
  }
}