Well, this is basically a drag and drop routine if you need to check something while dragging.

To break it down:
code:


on(press){

	startDrag(this);

//This creates a function watch for onMouseMove events.  That means whenever the

//mouse is moved, whatever is inside of this function will occur.

this.onMouseMove = function(){

//For now, it is your hittest, however, you add as much code as you like in this statement.

	if(_root.pin.hitTest(_root.balloon)){



		_root.balloon.balloon2.gotoAndPlay("popped");



	}



}



}







on(release){



	stopDrag();

//Setting this.onMouseMove to undefined is erasing whatever checks were set up in

//onPress statement.



this.onMouseMove = undefined



	}


I've used something like this for mouse based games before.