How did they do this?

I found a similar effect to dock in MAC enviroment its on this site

http://cr-v.honda.se/

Press “Designad för känsla” and then hover your mouse over the color bar, I thought that making a horistonal menu like that would be cool, so If anyone have an example .fla file or a tutorial or even tips on how to do it I would greatly appreciate it :party: