AS reload next Frame

My flash site has buttons to go to the next frame. the Buttons are Home, Print, Videos. So clicking each brings you to the appropriate frame. I have a bunch of actionscript on the first frame to load thumbnails and larger images through XML. Can i just keyframe the Actionscript on each frame and just change the XML attributes it calls? is that the same as reloading it?

Or is there some code i need to insert that specifcally wipes out any previous code and loads the code on the specific frame?