When you need it you need it. I just wanted to keep a link to this.
Fixed positioning has always been a nuisance for web designers because of the lack of support for it in Internet Explorer 6, but I’ve come up with a solution that allows for cross-browser fixed positioning that doesn’t come at the large costs that other techniques result in. If you’ve been on the hunt for a way to get elements with
position: fixed; to work properly in Internet Explorer 6, undoubtedly you’ve noticed that most methods come at the expense of absolute positioning or resorting to scripting. Mine does not.