Getting A loaded SWF to talk to its Parent SWF

Hey guys, I have a question i encountered when trying to elaborate on the framework set by this tutorial http://www.kirupa.com/developer/mx2004/transitions.htm
I was wondering, Is is possible to have a link in one of the loaded (child) SWF’s carry out the same actions as Clicking a button on the main navigation of the parent SWF. By this i mean, load a SWF, then inside of that SWF have a button to prompt the unload animation of that SWF, then Load a new one into a container set in the parent SWF. I hope that makes sense. If it helps to look at my application, goto www.prodigyshirts.com and click portfolio. Each one of the 5 portfolio subcatogories should unload (with animation) the swf that is currently displayed then load the corresponding movie into its place. Any Ideas? Thanks a million

Steve.O