Xml Photo Gallery w/ thumbnails Q

First that’s for the great stuff on this site. I’d be lost without it.

I’ve been trying to modify the xml photo gallery with thumbnails, it’s exactly what I need but I’ve run into a wall!
Everything works except you can only see a part of the photo (top left hand corner)
So I resized the viewing area and that didn’t help, so I resized the photos and that worked but the resolution is shot
now all the pics are fuzzy, do I need to change something in the actionscript, the xml, or what?
I’m really at a loss