Topic: Extra thumbnails for "details" or "related&qu

Great application - and very easy to use! I have one question though, is there a way, when someone clicks on a thumbnail, to load a couple extra "detail" thumbnails (graphics that I want to show related to the main image, but not mixed in with the main thumbnails) somewhere on the page? I am doing a portfolio, and I don't want to create a separate gallery for each item with it's own detail thumbnails b/c that would be ALOT of galleries, but I'd like to be able to just load a couple extra thumbnails related to that main graphic, somewhere on the side or bottom of the page.
I appreciate any help!
Thanks :)