Fantastic! Thank you very much for your help. Could you, by any chance, have a look at this page:

http://dev.tema-usa.com/2/2/8/27/

and see how it lays out. That's the only other thing I wasn't sure about. We layout the thumbnails on the catalog pages with the float property of the divs, and I wasn't sure that would work right in 5.5.

Thanks again!
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- trs