This is very interesting and something to pay very close attention to if you are into using CSS and are having difficulties getting it to play nice in IE. Just link in the the IE7 code, and hopefully it should work properly.

Still in alpha stages, but really neat, gonna try it out myself. And be sure to check out this guy's examples of different tricks you can do with CSS. The "complex spiral" demo really makes rethink how to design a site.

http://dean.edwards.name/ie7/

Found out about this over on the [H]forum looking for answers.

that looks really damn cool - although it IS just a trick to make it look like that, not actually using opacities, it looks DAMN cool.

I tried implementing it on my site, hoping to fix some stuff. Did do jack anything, even tho in debug mode it said it was running.

This isn't directly on topic, but I thought it was an interesting use of multiple styles in a single page
http://www.mcs.vuw.ac.nz/~db/style.html

Nah.. that's cool. I like that page alot. Will come in handy.