Previous and Next buttons are somehow stacked vertically

[taygraphics]

1) Script Title: Ulitimate Fade-in slide show v2.1

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

3) Describe problem: The Previous and Next buttons on manual slideshow are stacked vertically in Firefox when I need them to be spread out horizontally on the same line.
See: http://www.taylor-graphics.net/walke...son/index.html
CSS problem?

[ddadmin]

I don't see the slideshow script on that page actually...