                 scrollThumb = new ScrollThumb();
 
                 scrollThumb.focusEnabled = false;
-
+                scrollThumb.tabEnabled = false;
+                
                 // Add the thumb above the up arrow but below the down arrow
                 addChildAt(scrollThumb, getChildIndex(downArrow));
 

        {
            scrollTrack = new Button();
            scrollTrack.focusEnabled = false;
            scrollTrack.skinName = "trackSkin";
            scrollTrack.upSkinName = "trackUpSkin";
            scrollTrack.overSkinName = "trackOverSkin";

            downArrow.autoRepeat = true;

            downArrow.focusEnabled = false;
            downArrow.tabEnabled = false;

            // This button is a 4-state Button
            // that by default uses the ScrollArrowSkin.
