XML and multiple page thumbs

I’m working on a gallery where the images are loaded dynamically.

I want only ten of them to show at a time but since this xml is coming from a server where I do not know how many thumbs there will be, I need to have an arrow on each side of the movie clip holding my thumbs indicating that if I click on the right arrow, the next set of ten will load up, and if I click again, the next set will load etc. the left arrow is to go back to the previous set of thumbs.

Now I don’t want to load them all onto a holder and just move that around because there will be sequenced transitions which will not work if they are all loaded at once. I need to load just 10 at a time.

Anyone have any ideas on how to approach this or have any examples?

Thanks in advance for any help.