How do you do a DOUBLE CLICK?

I have a MC in my project that acts as a popup window only it is really just a movie clip. One that loads hi-res pictures AND… here’s the important part…
has a startDrag() action attached to it so that the user can move the picture aside if they so desire.

However to close this window, I’d like to have the user DOUBLE CLICK with the mouse. They should be able to double click anywhere on the movie clip or even anywhere else… it doesnt matter really. The thing is, how do I listen for a double click in ActionScript??

There no method for the built in classes that I could find.