Solution to annoying GMail Talk popup

I didn't want to disable the chat functionality completely because I can actually see some use in this feature, and I really want to like it.  So I turned to Greasemonkey and created a user script that disables those popups myself.

Greasemonkey is a Firefox extension that lets developers create scripts to add or change functionality on websites by using javascript.  If you have Greasemonkey installed, you can get the user script I created here, or make your own to do the same task.  My solution is a bit of a hack -- it disables all "mouseover" events.  I haven't seen any side-effects after installing my script but feel free to edit it yourself.

Here it is if you wish to make modifications:

// ==UserScript==
// @name          GMail Popup Disabler
// @description      Disable the annoying GMail Talk popup.
// @include       http://mail.google.com/*
// @include       https://mail.google.com/*
// ==/UserScript==
document.addEventListener('mouseover', function(event){ event.stopPropagation(); event.preventDefault();}, true);