Chuck i don't agree with your answer that this is a code modifications outside the product.
I see a lot of questions about this issue.
I also have the problem that 6 or 7 thumbnails are to much in showphoto.
A lot of photo's are smaller than the 6 thumbnails on the row near the photo.
Before the Ajax function was build in there where no problems with this function.
I think this is a little bug what needs a solution.
Ofcourse it is possible to turn off the function in the adminstration menu.
I have done this and i see on this forum that a lot of people also have done this but as i wrote that's no solution.