This is a neat little menu created to be a main navigation, but in my opinion it is a tad too slow. You can easily speed this up in the scripting provided, which I would do if I used it as a main navigation. It would be a cool little interactive element for a tabbed page especially.

http://devthought.com/blog/projects-news/2007/01/cssjavascript-true-power-fancy-menu/

When it comes to creating the navigation part of your Website, the first thing you might think of is an unordered list that you style as tabs. Lately, such navbars are everywhere, as many people believe they’ll make their site more Web 2.0-compatible. Personally, I just think they’re semantically better and accessible.