Simon Willison’s Weblog

Conditional classnames. Yahoo!’s internal coding standards still recommend CSS hacks over conditional comments because a separate stylesheet for IE imposes an additional HTTP request. Paul Hammond points out that you can use conditional comments to write out an extra class=“ie” attribute on the body element and use that to target the IE specific fixes in your stylesheets. 17th October 2008, 1:32 pm

Using multiple classes within selectors. Pretty much definitive guide to using multiple classes in a CSS selector, including problems with IE 5 and 6 and one way of addressing them using conditional comments. 11th November 2007, 11:07 pm

JavaScript Minifier that doesn’t break code (via) Perl re-implementation of Douglas Crockford’s classic JSMin that doesn’t clobber IE’s conditional comments, by Peter Michaux. 4th June 2007, 5:44 pm