Button Load New XML into movie?

Hey all,
I wondered if there was a way to have a few buttons load different xml docs into a single frame. Basically, I’ve got an image gallery, and I’d like to click a button and have a new xml doc load in and replace the existing. I know I could do this by just putting each gallery section on a frame, placing a load command on each frame for each xml doc, but I wondered how to do this on just one frame? (I hope this makes sense, haha) thanks!