Transitions Between External SWFs TUT help

Hi well I just want to know if somebody could help me with the action script for making the SWFs move up or down insted of side to side like the TUT on this website. The example I am talking about is here in this website below. just click on a button and you will see what I mean.

here is the website
http://www.matchbookromance.com/indexface.html

just click on one of the buttons to see what I am talking about.

and here is the kirupa TUT
http://kirupa.com/developer/mx2004/transitions.htm