If I was doing the site I think I'd use subsites with previous/next buttons and call them into a placeholder in the main site.
That of course makes the most sense and what I would have done had it not been such an unwieldy task in Xara. One of the benefits of NetObjects Fusion, and why I did Mary's site in that program in the beginning is the ease of working with large sites in a hierarchical manner. I thought the layers would be cleaner than adding 110 additional pages.

But when all is said and done I might have to do this. Creating sub sites for each gallery then physically linking back to the main site.

I'll experiment and see if this works. One gallery first to make sure the same problem does not happen if I just continuously click the same spot over and over.