?How did they do this?

Antique Auto Museum at Hershey, Pennsylvania
see the scrolling vertical menu (highlights a link when the main image changes) Id like to achieve that same effect on
On The Ocean: Location
I have a black horizontal menu with 4 links (condos) and it autoscrolls 1 time when the page is loaded, how do I do what they did and highlight the active links on the autoscroll (so the user doesnt have to mouseover them?)


I gather this is what Im looking for
Dynamic Drive DHTML Scripts-Tab Content Script (v 2.2)