Does jQuery dispatch an event when it's attached to window?

Does jQuery dispatch an event when it's attached to window?

So, yeah, does jQuery dispatch an event when it's attached to the window object?

I'm attaching a script through
  1. var s = document.createElement("script");
  2. s.type="text/javascript";
  3. s.src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js";
  4. document.getElementsByTagName('head')[0].appendChild(s);

then I'm running a setTimeout to detect when jQuery is available
  1.  var i = setInterval(function(){if (window.jQuery) {
  2.       doStuff()
  3. }}, 30);

It would be much easier to do something like 
  1. window.addEventListener("jQattached", doStuff);

Thoughts?