Examination of CSS Differences in IE 6, 7 & 8
Anyone who has delved into the hairy world of SharePoint CSS knows that it can be difficult to effectively create a cross-browser experience that's *exactly* the same across recent versions of IE (6, 7, 8). The fine people at Smashing Magazine have dissected all of the differences for us in this very useful article: http://www.smashingmagazine.com/2009/10/14/css-differences-in-internet-explorer-6-7-and-8/