protected override void OnDisable()
        {
            base.OnDisable();

            if (_killOnDisable)
            {
                SPTween.Find((t) =>
                {
                    if (t is ObjectTweener && (t as ObjectTweener).Target == _transition)
                    {
                        t.Kill();
                        return(true);
                    }
                    return(false);
                });
            }
        }