Originally done as explained in this post, and then updated with better code.
The core of this slanted tab placement is this:
#tabs li { float: left; } #tabs li.tab { float: right; } #tabs li.tab a { background: url( images/toptabr.gif ) no-repeat 0 0; margin-right: -1px; margin-top: -7px; padding: 12px 1.2em 12px 1em; }
Take a look in the source for the full styling and required hacks for IE.
There is also a left-2-right variant.