Milambur, good eye for detail.
I compared the online version to the version that was originally published and the published version is correct. You caught a USPTO typo. I will get the online version of the patent corrected ASAP.
As far as the patent being in public use at the time I filed for the patent, I worked with and evaluated a number of of online shopping carts and related publishing programs and everybody was using skins. Nobody had a dynamically created CSS file that could be custom configured by a database in which the affiliate webmaster could log in and set their own values for customizing their pages from my servers.
I did extensive research myself and paid plenty for the patent attorney to do prior art searches. Personally, I think the patent is solid.
Again, thank you for catching the typo.