Loading External SWF Problem

How to open a new flash file within a flash and redirect to again original flash without closing new one.

for example i have a link to open new flash file(1.swf) under my current flash(main.swf) second frame.

when user will click on that link, it will open a 1.swf in new window,
but my problem is how to redirect user, go back to original flash(main.swf) from newly opened flash(1.swf).

i try some of command like loadmovie, geturl etc. but not got perfect result

any one pls help me

thanks