Featured Content Slider positioning problem

[Geezer D]

1) Script Title: Featured Content Slider

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...tentslider.htm

3) Describe problem: Can anyone figure out why this wont center in Firefox, but does in IE?

Here's the site: http://www.aedadvantage.com/gdgsite2/

Check it in FF, scroll down and see my blue shiny logo under it? That's centered as should be, IE and FF. But in FF, the F.C.S. is over to the left.

Here's the CSS, if that helps, and thanks!:

EDIT: Mystery solved. needed to change the width's to 100%, instead of a number.