Dynamically repositioning nav menu

I'd like to create a nav menu for a WordPress theme that will function exactly the same as the top navigation on http://www.duarte.com/. For example, if you click on 'Teams', the main nav moves to the left, and the sub nav appears on the right. Addtionally, it needs to w开发者_JAVA技巧orks with the custom menus features.

It should work with display:block; float:right; Add this css style to the menu and the submenu.