External swf problems/questions

i have 2 things i would like to know about using external swf’s.

#1: i have a button on the main stage that loads an external swf clip on top of the main stage, hiding the buttons on the main stage, but when you mouse over the external swf that is playing, your cursor can still click the buttons beneath the clip. How can i make it so you cant trigger the buttons when while the external content is on top of them?

#2: also in a loaded external swf, can you make a button on the swf itself that allows you to close it (unload it).

                                         thats it, thx