Horizontal parallax scrolling menu?

Hello,
I was wondering if someone could point me in the right direction for a tutorial on parallax scrolling menus.

I’m trying to create a ‘viewmaster’ type effect with several levels of mouse-detected scrolling happening at different speeds to give the illusion of depth. I’ve got all my artwork cut and exported but I havent found any good resources on how to actually make a menu like this. Some of these levels would be movie clips that I assume would be targeted by a rollover.

The site http://saintsandsoldiers.com is a great example of what I’m trying to accomplish.

Any pointers in the right direction would be of great help!

Thanks!

-Mark-