/* 
Executing JavaScript on page load
http://simon.incutio.com/archive/2004/05/26/addLoadEvent 

USAGE 1:
addLoadEvent(nameOfSomeFunctionToRunOnPageLoad);

USAGE 2:
addLoadEvent(function() {
  // more code to run on page load  
  // ...
});

*/

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    };
  }
}