Browser Detect

Browser detection gets more and more complicated, now that several browsers can "impersonate" as other browser version...

http://www.quirksmode.org/js/detect.html

http://www.quirksmode.org/js/support.html

Cool way of detecting browser and making things display nice by using plain CSS, without complex JavaScript functions.

http://www.codeproject.com/html/css-hacks.asp