Buttons still clickable when a new swf is loaded

Hi everyone,
I made swf1 and have placed buttons on it.
on the click of the button t loads swf2 but the buttons placed on swf1 are still clickable but invisible.
also how to close the loaded swf2 but putting a button on swf2 itself .
Thanks in advance.
Ankit
ankit.k.shrivastava@gmail.com