I'm looking to build a menu that sticks to the top of the page as you scroll past it like the one on http://99u.com/
I've tried the 'floating menu' plugin and 'Code flavors floating menu' plugins. They can put a menu that returns to a fixed position if you scroll past it but they don't seem to have the 'stop at the top' effect.
Can this sort of thing be done in CSS or would I need a jquery script?
Any advice, or links to scripts tutorials would be appreciated.