     {
         super();
     }
+        
     
     //--------------------------------------------------------------------------
     //

     *  The index of the last row that's part of the layout and within
     *  the layout target's scrollRect, or -1 if nothing has been displayed yet.
     * 
     *  Note that the row may only be partially in view.
     * 
     *  @see firstIndexInView

        // fall within the layoutTarget's scrollRect
        var visibleRows:uint = 0;
        var minVisibleY:Number = layoutTarget.verticalScrollPosition;
        var maxVisibleY:Number = minVisibleY + targetHeight;
        
        // Finally, position the layoutElements and find the first/last
        // visible indices, the content size, and the number of 
