i made this in response to a gallery question and took the opertunity to stick it to javascript(i hate it so so much). but... alas. i don't have enough machines to cross browser check it. can a few of you look with your browsers and tell me if it's garbage. i know the links should be thumbnail but i'll get to that if it doesn't suck.
http://richardkentgates.com/examples/focus.php
and a little shot so you can see what it should look like.