Interesting menu navigation, anyone know how it works?

[maxdennx]

http://www.howlifeworks.com/Default.aspx

I really like how the box scrolls over the link on hover. I looked at the code a bit but couldn't really decipher it as i'm still a beginner as far as javascript/coding goes.

 

[CaldwellYSR]

Looks like a variation of the LavaLamp plugin