Arrows for choosing images not working in firefox

Folks,

I use firefox for browsing, but the arrow functionality to choose groups of images is flaky or nonfunctional using firefox. It seems to work ok with IE8. I'd like to keep IE8 relegated to the unused icon batch on my computer. Is it possible to fix what I assume is a slight compatibility issue? I see on the tutorials Google Chrome is recommended. I'd really like to stay with firefox.

Thanks and clearest skies,
Walt Cooney