Image gallery help

I was wondering if someone could help me develop a film strip similar to the website www.gtrproto.com where there is a film strip of thumbnails and when you click on them a larger image shows up above it. The film strip also hopefully can move left or right according to where the mouse is placed. I have done a thumbnail strip before but with a scroller bar, but now sure how to do it otherwise.

Any help would be appreciated.

Thanks.