Scrolling thumbs for Senocular XML portfolio tutorial mutation

Using bubble gum, snot and paper clips, I have mutated Senocular’s XML portfolio into a site. (such a hot piece of code, that xml portfolio!)

I would like to make the thumbs at the bottom scroll left and right, and stop at the beginning and end. I have tried out a bunch of ideas that did not work, I have come to the realization that I don’t even know where to begin, as I am not awesome at actionscripting (but I have gotten myself this far!).

Any help on creating a mousover scroll function for these dynamically thumbs would be great!!!

If someone could help me accomplish this, I would really appreciate it.

The whole site is kinda chunky, so I am not going to post it unless someone asks.