Camera Zoom HELP!

I am trying to get a zoom in and out effect like this

http://www.reflektions.com/miniml/template_permalink.asp?id=122

I used the source code, but when I click a circle to zoom in, it is not centering on the stage… Also, I am wondering if this code can be changed so that I can attach several different movie clips to the stage, instead of having one movie clip duplicate… I would like to have like 5 or more different mcs: movie1, movie2, etc… and with the same effects…

this is my fla… does anyone know how to tweak this??
thanks for reading my post and any help!