             return;
         
         updatePreferredSize(); 
-        
-        // If the effective value of showDataTips has changed for this column, then
+
+		// If the effective value of showDataTips has changed for this column, then
         // set the renderer's toolTip property to a placeholder.  The real tooltip
         // text is computed in the TOOL_TIP_SHOW handler below.
-        
+		
         // TBD(hmuller) - this code should be common with GridItemRenderer
         
         const showDataTips:Boolean = rowIndex != -1 && column && column.getShowDataTips();  

    {
        _styleDeclaration = value;
    }

    //--------------------------------------------------------------------------
    //
    //  Event Handlers
    //
    //-------------------------------------------------------------------------- 
    
    // TBD(hmuller) - this code should be common with GridItemRenderer
    private function toolTipShowHandler(event:ToolTipEvent):void
    {
        var toolTip:IToolTip = event.toolTip;
        
        toolTip.text = column.itemToDataTip(data);  // Lazily compute the tooltip text
        
        // Move the origin of the tooltip to the origin of this item renderer
        
        var sm:ISystemManager = systemManager.topLevelSystemManager;
        var sbRoot:DisplayObject = sm.getSandboxRoot();
        var screen:Rectangle = sm.getVisibleApplicationRect(null, true);
        var pt:Point = new Point(0, 0);
        pt = localToGlobal(pt);
        pt = sbRoot.globalToLocal(pt);          
        
        toolTip.move(pt.x, Math.round(pt.y + (height - toolTip.height) / 2));
        
        var screenRight:Number = screen.x + screen.width;
        pt.x = toolTip.x;
        pt.y = toolTip.y;
        pt = sbRoot.localToGlobal(pt);
        if (pt.x + toolTip.width > screenRight)
            toolTip.move(toolTip.x - (pt.x + toolTip.width - screenRight), toolTip.y);
    }

    import mx.core.DesignLayer;
    import mx.core.IFlexDisplayObject;
    import mx.core.IFlexModuleFactory;
    import mx.core.ILayoutDirectionElement;
    import mx.core.IToolTip;
    import mx.core.LayoutDirection;
    import mx.core.mx_internal;
    import mx.events.FlexEvent;
    import mx.events.ToolTipEvent;
    import mx.geom.TransformOffsets;
    import mx.managers.ISystemManager;
    import mx.managers.ToolTipManager;
    import mx.styles.CSSStyleDeclaration;
    import mx.styles.IStyleClient;
    import mx.styles.StyleProtoChain;
