How do I stop an intro, then replace Content

Flash CS3 using AS2 with animated intro with stop action ending with nav bars and home page content all contained in one big MC.
Then the home page content appears on the page. When a nav button is clicked the linked swf appears but the home page content remains behind the new swf.

I have created a small version of my file since it was too big to post.
I also searched previous threads and found one similar post from 2004 with no response to his question.
Any help is appreciated,
Puff