Website Advise

Hi guys,
I’m going to create a new website where i’ve a main swf that loads all the other that are called by the menu.
I’m going to use swfaddress for deeplinkng, but my question is: when the user click on one menu voice the main swf load an external swf. now, when i click on another swf i must make a out-transition of the current loaded how can i detect in the external swf that the user click another menu voice?
Or i must do the out-transition in the main swf?
I hope you have understand :cyborg:
Let me know…