Javascript Custom Navigation

I need to create a custom javascript navigation. I have a photoshop file with a graphical layout. But need the layers to be converted to drop down menu on mouse over. Attached is a sample of the navigation, it will be revised for clarity. Also on the main page of the site I need to incorporate 2 different javascript menus Check it out, I’ve attached the photoshop file, click on different layers to see what I’m talking about. On [login to view URL] file, the white space after the last nav bar will need to be removed. Its currently there so you can see where the drop downs should go. I mode detailed photoshop file will be emailed once we decide to move forward. This is an urgent matter I need to have this done asap. Thanks, -Andrey