I'm updated my script to version 1.1. It now supports clicking the thumbnail to see the full image and also adds a <br clear=left> to make it properly clear for Mozilla/Fire(bird|fox).
This is HEAVILY based on a link I found here and I can't for the life of me find the orignal post for proper attribution. If you know who it's from please let me know so I can give them their due attribution.
Anyways, feel free to take a look and download it at my blog