Loading .swf's into seperate .swf's on an HTML page : )

I have been trying to find recources on loading a .swf into a sepearte one.
for instance:
I will have an HTML layout with multiple flash movies. I know I can load movie into the .swf that the button is in.

my question is. can I have the navigazion on the left side of the screen communicate with another random .swf to load the additional content?

thank you all,