this css style, which works fine with IE, does not display a colored scrollbar in Firefox:
Are colored scrollbars not supported with Firefox, or do I have to change something within the code (it should also work with IE afterwards).
Changing scrollbar colors using css is not a standard css code and is not supported in Firefox.
This link may help - http://www.dreamincode.net/forums/topic/15885-change-scroll-bar-color-in-firefox-and-opera/
Do you have CSS about custom scrollbar?