Closing an external movie clip

I have searched the forums and tutorials and can’t seem to find anything to help me with this. If you go to http://oraneproductions.com/ and click on portfolio, and click on one of his sites, there is a little movie that launches. You will also notice an x which closes that same movie that opens up. Can any one point me in the right direction on achieving this…that is the button that closes the launched little movie clip?

Thanks in advance
Bonafide