There was a thread here a minute ago asking whether you can control the width of a scrollbar using CSS. I was writing a reply, but when I tried to submit it the thread had disappeared - vanished, like an old oak table

Anyway - here's my reply:

As far as I can see the scrollbar width is fixed. There are no "scrollbar" properties mentioned in the CSS 2 Specs:

But there is a list of "scrollbar" properties on this page at MSDN:
Although they are listed as extentions and will only (one assumes) work in IE.

Hope that helps.