Which javascript they are using at the given link?
<p>Can anybody inspect which javascript they are using for the floating baloons?  - <a href="http://themeforest.net/bundles/birthday" rel="nofollow">http://themeforest.net/bundles/birthday</a> </p>

<p>I was looking with the firebug for a while, but cant get which would be the right one. Thanks!</p>
