 	 *  This function is intended for variable height items.
 	 * 
 	 *  Returns the index of the item that contains y, or -1.
-	 * 
-	 *  Implementation note: currently the inclusion test is slightly
-	 *  incorrect, since we're comparing y with the _closed_ interval
-	 *  from p.y to p.y + s.y + gap.  This is to accomodate checking the
-	 *  "bottom" of the scrollRect, see the computation of i1 in
-	 *  scrollPositionChanged.  One alternative that would restore
-	 *  the more correct open ended interval, would be to check
-	 *  the bottom of the scrollRect less some infintesimally small
-	 *  amount.
 	 *   
 	 * @private 
 	 */

            var dy:Number = layoutItem.actualSize.y;
            maxX = Math.max(maxX, x + dx);
            maxY = Math.max(maxY, y + dy);
            if (((y < maxVisibleY) && ((y + dy) > minVisibleY)) || 
                ((dy <= 0) && ((y == maxVisibleY) || (y == minVisibleY))))
            {
            	visibleRows += 1;

     * 
     *  If <code>requestedRowCount</code> is -1, then all of the items are displayed.
     * 
     *  This property implies the layout's <code>measuredHeight</code>.
     * 
     *  If the height of the <code>target</code> has been explicitly set,
     *  then this property has no effect.
     * 
     *  @default -1
     */
