Ugh. A dilemma. On the one hand, I should make sure it works in IE, the most popular browser out there. On the other hand, I've already found the standards-compliant version that works best with OmniWeb and anything else that uses the Mozilla engine... well, I'll see what I can do. (First of all by locating a copy of IE to test on....)
I strongly recommend checking out csszengarden.com. There's some really amazing stuff on the site, and just about everything is done with either CSS1 or very widely-supported CSS2.