void INMouseEventCallback.OnMouseEvent(NAspNetThinWebControl control, NBrowserMouseEventArgs e)
            {
                NThinDiagramControl diagramControl = (NThinDiagramControl)control;
                NNodeList           nodes          = diagramControl.HitTest(new NPointF(e.X, e.Y));
                NNodeList           shapes         = nodes.Filter(CellFilter);

                if (shapes.Count == 0)
                {
                    return;
                }

                NClickomaniaGame game = (NClickomaniaGame)diagramControl.Document.Tag;
                NTableCell       cell = (NTableCell)shapes[0];

                if (cell.ParentNode.ParentNode != game.BoardShape)
                {
                    return;
                }

                if (String.IsNullOrEmpty(cell.StyleSheetName))
                {
                    return;
                }

                if (game.OnCellClicked(cell) == false)
                {
                    return;
                }

                // The user has clicked on a cell that is part of a region
                diagramControl.ServerSettings.EnableAutoUpdate = true;
                diagramControl.Update();
            }
            void INAutoUpdateCallback.OnAutoUpdate(NAspNetThinWebControl control)
            {
                NThinDiagramControl diagramControl = (NThinDiagramControl)control;
                NClickomaniaGame    game           = (NClickomaniaGame)diagramControl.Document.Tag;

                game.ClearHighlightedCells();

                diagramControl.ServerSettings.EnableAutoUpdate = false;
                diagramControl.Update();
            }