Incorporating background switcher code

[vkot]

 I have narrowed down the problem of my styleswitcher code to this:

Code Select Expand

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}
When the above is NOT present in the javascript, everything works normally. In fact, just the existence of

Code Select Expand

window.onload = function(e) {
}
makes the PM recipient autosuggest and the PM pop-up notification not work.

I cannot understand how this is conflicting with the autosuggest script (http://media.simplemachinesweb.com/smf/default/scripts/suggest.js) and the PM Pop-up script. Why a window.onload call stops these specific scripts from working? Can someone help?

(I'm sorry if I shouldn't post to other person's thread, but I have posted my code only in this thread.)