Ray: I often don't bother IE with left anything... it seems much happier with playing with the margins (and leaving left at 0) anyways.
How many :focuses are in that code? None : )
When you're used to keyboarding through web sites, you realise you're going to be relying a whole lot on the status bar at the bottom (usually) of your browser, and hope the URLs look sensible. There are CMSes out there who like to make every URL look like some kind of freaky salted hash, I think just to screw with those of us who use the addressbar for site navigation : (
I was trying out Crusty's for a potential answer for someone here on the forums, but the buggy behaviour of all versions of Firefox/Gecko made it a no-go. The submenu items remaining at the top are just way too confusing. Also I had a lot of trouble with variable-length top-level li's. It worked better with static widths as Crusty has it. So I've stuck to the old-fashioned ones for now, at least until Mozilla decides to fix this (it's likely an ambiguous thing that they don't consider a bug anyway).
I know, I've gone through Paul's site many times knowing he had some demo of something, but not being able to find it. : ) Paul should hire someone to go through his site, organise stuff into "old" and "current-best" sections and have them all linked on his main page.
That simple dropdown menu, btw, can be seen at valuedstandards.com. The top right on a desktop-ish wide screen has a menu which cleverly uses :target to make the whole dropdown appear so long as the user has clicked on the "to the menu" link, which goes to #nav, the menu. Quite brilliant, but of course wasn't designed to be robust on "crappy" browsers. Also he has weird things like li:focus which won't work.