Actually, it was netscape when they implemented layers with NS4.
I did kind of make that up - Macromedia were the first place I had heard them used. The fact still stands that it's not a phrase that's used anymore.
Shagwana - Oh. Does that mean you actually drew the curves with css? I guess I'll let you off then - that wouldn't be possible with a single div :)
In which case I'll pont out this link. It relies on javascript for the curves but degrades gracefully without. http://pro.html.it/articoli/id_599/idcat_31/pag_1/pag.html
Here's the final page after following the tute - http://pro.html.it/esempio/nifty2/nifty10js.html - and you can see from the source it's considerably cleaner :D