This is a cool menu created with MooTools. I would use it for a great flash like presentation on the homepage for a gallery like effect. It seems almost impractical to use it for a main navigation, but it is still pretty cool.

http://www.phatfusion.net/imagemenu/

2 optional onClick events - open & close

href passed to onClick events

stays open when clicked

closes when clicked

select item to pre-open