I was doing some design work on a new business web site and fighting some alignment issues with Mozilla and Internet Explorer. After a bit of digging I discovered this conditional comment feature of IE 5 and 6.
<!--[if IE 5]>
<link rel="stylesheet" type="text/css" href="/css/ie5-fejl.css"></link>
<!--[if IE 6]>
<link rel="stylesheet" type="text/css" href="/css/ie6-fejl.css"></link>
This doesn’t solve the problem I’m working on, but I thought this was a neat enough trick. I’m glad I don’t have to deal with design issues like this on a daily basis. It’s frustrating enough to debug simple alignment issues.