addEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);

function fl_EnterFrameHandler(event:Event):void
{
	var rad:int;
	var grados:int;

	trace(stage.mouseX);
	rad=Math.atan2(stage.mouseY-261,stage.mouseX-261);
	// a grados
	grados=(rad/Math.PI)*180;
	trace(grados);
	test.rotation=grados
}