The bar appears like:
The HTML is:
Again in the actual HTML all the links are on the same line, to avoid whitespace from line breaks.
So here we just use a set of links - some real (class menu), some are the left and right ends, and some are gaps.
The CSS for the menudiv is just to center the menubar:
The 'proper' links are
left and right are the same except for the background image and the left or right padding:/p>
and gap is just
The hover effect is simply:
rightblack.gif is 
leftblack.gif is 
middleblack.gif is 
gapblack.gif is 
Syntax highlighting by Alex Gorbatchev