var stageDragInitialX:Number;
var stageDragInitialY:Number;

var bgRect = Rectangle {
    onMousePressed: function(e) {
        stageDragInitialX = e.screenX - stage.x;
        stageDragInitialY = e.screenY - stage.y;
    }
    onMouseDragged: function(e) {
        stage.x = e.screenX - stageDragInitialX;
        stage.y = e.screenY - stageDragInitialY;
    }
}