startDrag - constrain to rectangle

programming flash
1

Hi

I have 9 images that are draggable on my screen - and when pressed become the top image- using the script below.

I’d also like to constrain to a rectangle (or coordinates) - ideally adapting the exisiting script and movie clip set-up.

Grateful for any ideas on achieving this.

Thanx

The script:

on (press) {

//Start Dragging Movieclip Behavior
startDrag(this);
this.swapDepths(this._parent.getNextHighestDepth());
//End Behavior

}
on (release) {

//Stop Dragging Movieclip Behavior
stopDrag();
//End Behavior

}