/*
Is used for adding functions to the onload.

Usage:
addLoadEvent(function() {
  yourFunction(argument);
});

*/

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