We’re going to give our Menu Item movie clip a drag tab, called Useless Fun Drag, so that we can move it around in the Flash movie. For this, all we need is a transparent button that has this Drag action assigned inside it (I put it on its own Drag button layer): 

on (press) {
  startDrag ("");
}
on (release, release Outside) {
  stopDrag ();
}

This does nothing more complicated than tell the movie clip to drag when the user presses the button and stop when he releases.