code: public void showMenu (Stage stage, float x, float y) {
  		setPosition(x, y - getHeight());
  		if (stage.getHeight() - getY() > stage.getHeight()) setY(getY() + getHeight());
  		ActorUtils.keepWithinStage(stage, this);
  		stage.addActor(this);
  	}
docs: Shows menu as given stage coordinates
  @param stage stage instance that this menu is being added to
  @param x stage x position
  @param y stage y position