Find out global coordinates of a movie clip in order to animate it

[Jazztronik]

I have a group of movie clips (sunglass1, sunglass2, ...) arranged in rows and columns within another container movie clip. Just beside this "gallery" there's a movie clip I call frame.

What I want to do is: when you click on a sunglassn movie clip, it has to be animated by a Tween which places it on the center of the frame from its initial location (no matter if I work with the coordinates of frame or with _root, I want to place it always on a specific location of the stage).

For an only child, it would be something like this:

sunglass1.onPress = function() {
     var animX:Tween = new Tween(this, "_x", Regular.easeIn, this._x, desiredEndPointX, 0.5, true);
     var animY:Tween = new Tween(this, "_y", Regular.easeIn, this._y, desiredEndPointY, 0.5, true);
}; 

The problem is that those coordinates are the ones in its container, not their analog ones with regard to _root or frame.

I guess I have to use the localToGlobal method, but I don't know how to use it in this case.

Please, could somebody help me?

[dawsonk]

containerMC.sunglass1.onPress = function() {
	var myPoint:Object = {x:200, y:100};
	this._parent.globalToLocal(myPoint);
	var animX:Tween = new Tween(this, "_x", Regular.easeIn, this._x, myPoint.x, 0.5, true);
	var animY:Tween = new Tween(this, "_y", Regular.easeIn, this._y, myPoint.y, 0.5, true);
};

[Jazztronik]

Many thanks dawsonk!! I was using just the opposite method!