MSIE ID and Class Selector Bug
More about this weirdness: http://isaacschlueter.com/2006/03/ie-multi-selector-bug/
This is p#zero. It isn't targeted by ID by any style rules. The default rules are:
This is p#one. It should have different colors than p#zero. It should be
yellow on hover, and purple on click. In IE6, it's RED on hover, and purple on click.
This is p#two. It's just like p#one, but its two special rules are in different
style tags. It should be purple on hover, and yellow on click. In IE, this one works fine.