Im building this site for a client and got this mootools code that I wanted to use for the nav links.(Mouseenter, Mouseout type code). Its supposed to fade in w another color when a mouse hovers over the div. Then when the mouse leaves the div it goes back. Ive tested the demo I got with the div ID's changed the way I have them on my site but it still doesnt work. Please can someone help me out. This is the link to the site.

Thanks in advance!