void Update()
        {
            float             totalH = list.getTotalHeight() - list.getContainerHeight();
            List <ItemBundle> ibs    = list.listVisble();
            float             firstY = ibs[0].getRealY();

            text.text  = "Scrollble=" + list.isScollble() + " ended=" + list.isEnded() + " firstY=" + firstY;
            text.text += " totalH=" + totalH;
            string ss = "";

            foreach (ItemBundle ib in ibs)
            {
                ss += ib.position + " , ";
            }
            text.text += "\n" + ss;
        }
 private float getTotalH()
 {
     return(list.getTotalHeight() - list.getContainerHeight());
 }