 	 *  @private
 	 *  Update the column widths for the columns visible beginning at scrollX, that will fit
 	 *  within the specified width.  The width of GridColumns that lack an explicit width is 
-	 *  the maximuum of the preferred width of an item renderer for the grid's typicalItem, 
+	 *  the maximum of the preferred width of an item renderer for the grid's typicalItem, 
 	 *  and the preferredWidth of the corresponding ColumnHeaderBar item's renderer.
 	 * 
 	 *  This method should be called *before* layoutItemRenderers(). 

    {
        // TBD(hmuller):DTRT when the target changes
    }    
    
    //--------------------------------------------------------------------------
    //
    //  DataGrid Access

            else
                availableHeight -= rowHeight + rowGap;            
        }
           
        // Free renderers that aren't in use
        
        for each (var oldRenderer:IVisualElement in visibleItemRenderers)
