Help getting rid of a movie

Hello Gurus,

My main movie is about phonology and it has a lot of terminology that I would like the users to see explanatory pop ups when they click on any of them. The pop ups are displayed using load movie (they are external swf movies). They load fine and the users can drag them around the screen. However, once they are on the screen, there’s no way to get rid of them. I have a button on each of these pop ups that looks like Microsoft exit button, but does not act similarly. What code can I assign to the exit buttons on these pop ups, so they get the hell out of my screen.

the movie is attached to this message and your hel is appreciated in advance.