// Functions related to events.

// Add a handler to the page onLoad event.
//
function addOnLoadEvent(handler) {
  var oldOnLoad = window.onload;

  if (typeof window.onload != 'function') {
    window.onload = handler;
  } else {
    window.onload = function() { if (oldOnLoad) { oldOnLoad(); } handler(); }
  }
}