If you have to hack your CSS for IE6, no doubt you faced with a lot of frustrations. One of the annoying things is when you set some element on the website and it all seems to be okay and finally problem solved. But as soon as you resize the browser, some elements jump to other seemingly random places. 
But I wasn't smiling when trying to get this to work.
Wes gave me fantastique advice of experience — use position:relative on elements that are jumping all over the place. Most of the time this trick works!