your main timeline can always be reference by using _level0.
if your target for page.swf is in a frame on the main timeline you
can also use _parent from a button in the target to reference the
If you target what you want to do just like if it was in the
same swf. The mc you want to load won't work correctly until it's
tested in the movie your loading into. Like my code. _root with dot
in between each nested element. My code has the an empty mc called
'empty' that MARK_EXPAND is loaded into. And 'empty' is nested in
'InterfaceYO' which is nested in HEADERfadeout which in turn is
(obviously) in the _root, which is the source.