Oh come on!
 

In my infinite wisDUMB I jiggled something somewhere (I think in the FF css) and now my first subcategory page is no longer in a lovely inline block format. I can't figure it out.

http://www.baby-land.com/store/On-The-Go.html

but it only does this in Firefox.

You think I would leave well enough alone, or at least pay attention.

Re: Oh come on!
 

common_files/modules/Flyout_Menus/Icons in here you will probably find the issue and check http://validator.w3.org for errors

Re: Oh come on!
 

"inline block" is indeed the key. Add "display:inline-block" to .subcategories class, or inline on the span.