How do I create this nice effect?

I was wondering if anyone could point me in the right direction, as to where I can find information/tutorial on producing a scrolling image interface just like the following example:

If you click on the PROJECTS link this then takes you to a page which shows a scrolling image this then changes when the user clicks on a project, I love this effect and wish to build somthing like this myself but having the images move when hovering over a project so the end user does not have to click.

Any suggestions will be helpful, I have tried searching for such a tutorial but dont know what this effect is called.

Many thanks