XML Drawn rectangles to movieclip array?


I am using an external custom class to draw xml driven shapes in a movieclip. Please take a look at www.expocadvr.com/temp/default.html for a better idea of what I am working on. I am looking to turn each shape (which would be a booth) into a button…so that I can click each booth and have some info come up about it. I am having a hard time calling the array from the main movie…can someone point me in the right direction where to look for help?