                 // highlight node border on mouse over
                 function(e:SelectionEvent):void
                 {
-                    //node.lineWidth = 2;
                     e.node.lineColor=0x88ff00FF;
                 },
                 // remove highlight on mouse out
                 function(e:SelectionEvent):void
                 {
-                    //node.lineWidth = 0;
                     e.node.lineColor=_default_node_line_color;
                 }));
 

            addChild(vis);
            vis.update();
            layout();
            // updateLayoutFormatText();
            vis.update();
        }


        private var _edges_toogle_container:Sprite
        private var _layout_format_toggle_container:Sprite;
        private var _node_click_behavior_toggle:TextSprite;

        private var _below_vis:TextSprite;

