Mellow Greetings, everyone!

I've been teaching myself Flash for about two months now, and while I've got the basics of it, there's still a lot for me to learn!

If you would kindly look at the site http://www.leoburnett.com - they did this cool action where the letters float around, and fly in tandem with the mouse movement. Could someone tell me what action that is, so I could research and learn it?

Thanks in advance!