      */
     public function setCellHeight(row:int, col:int, height:Number):void
     {
-        var node:GridRowNode = rowList.find(row);
-        if (!node)
-            node = rowList.insert(row);
+        if (!isNaN(fixedRowHeight))
+            return;
+        
+        var node:GridRowNode = rowList.insert(row);
         
         if (node)
         {

     */
    public function setRowHeight(row:int, height:Number):void
    {
        var node:GridRowNode = rowList.find(row);
        
        if (node)

     */
    public function insertRows(startRow:int, count:int):void
    {
        var startNode:GridRowNode = rowList.findNearest(startRow);
        var tempNode:GridRowNode;
        
        // shift indices by count.
        if (startNode)
            tempNode = startNode.next;
        while (tempNode)
        {
            tempNode.rowIndex += count;
            tempNode = tempNode.next;
        }
        
        this.rowCount += count;
    }
    
    /**
