Hello -
We are sorry you are having and issue.
We use Firefox as our primary browser. I have checked two sites (including this one) running Firefox .3.6.3 on both Mac OS X and Windows XP and there are no issues with either site.
When you go to the frontpage of
www.corshops.com in Firefox, do the two scrollers at the top of the page render normally?
Since we constantly test our scrollers in the various browsers and operating systems, it is highly unlikely that the scrollers are simply broken in Firefox.
What is most likely is that you have a conflict of some kind.
Please read this post:
www.corshops.com/Virtuemart-JCarousel-Scroller/Troubleshooting-Steps-For-the-Scrollers.html
and follow the recommended steps to debug your site.
If none of that helps, then either PM me or post a link to your site and we'll check it out.