// get PageView control with "pluginPageView" identifier from the HTML page in jQuery plugin
    var pageView = $("#pluginPageView").ImGearPageViewPlugin();
    // get PageView control with "pluginPageView" identifier from the HTML page for Ajax server
    //var pageView = $.find("pluginPageView");
    // get context menu for image and HandPan mouse tool
    var contextMenu = pageView.getContextMenu(null, ImageGear.Web.UI.MouseTool.HandPan);
    // get second level menu
    var popupMenu = contextMenu.get(4).contextMenu;
    // add separator to the end of list
    popupMenu.insert(popupMenu.get_size(), new ImageGear.Web.UI.ContextMenuItem(ImageGear.Web.UI.ContextMenuItemType.Separator));
    // create the handler of menu item for all mark types
    var commonClickHandler = function (pageView, mark) {
        if (mark) {
            var markType = mark.get_type();
            switch (markType) {
                case ImageGear.Web.UI.MarkType.Line:
                    alert('Line mark is clicked');
                    break;
                case ImageGear.Web.UI.MarkType.Polyline:
                    alert('Polyline mark is clicked');
                    break;
                case ImageGear.Web.UI.MarkType.Rectangle:
                    alert('Rectangle mark is clicked');
                    break;
                case ImageGear.Web.UI.MarkType.Ellipse:
                    alert('Ellipse mark is clicked');
                    break;
                case ImageGear.Web.UI.MarkType.Polygon:
                    alert('Polygon mark is clicked');
                    break;
                case ImageGear.Web.UI.MarkType.Text:
                    alert('Text mark is clicked');
                    break;
            }
        }
        else {
            alert('No mark is clicked.');
        }
    };
    // create new context menu item
    var alertMenu = new ImageGear.Web.UI.ContextMenuItem
        (ImageGear.Web.UI.ContextMenuItemType.UserMenuItem,
        'Mark Checker', undefined,
        commonClickHandler
    );
    // add alert context menu item after the separator
    popupMenu.insert(popupMenu.get_size(), alertMenu);
          
    // set the renew context menu for HandPan mouse tool
    pageView.setContextMenuForTool
        (contextMenu, ImageGear.Web.UI.MarkType.Line, ImageGear.Web.UI.MouseTool.HandPan);
    pageView.setContextMenuForTool
        (contextMenu, ImageGear.Web.UI.MarkType.Polyline, ImageGear.Web.UI.MouseTool.HandPan);
    pageView.setContextMenuForTool
        (contextMenu, ImageGear.Web.UI.MarkType.Rectangle, ImageGear.Web.UI.MouseTool.HandPan);
    pageView.setContextMenuForTool
        (contextMenu, ImageGear.Web.UI.MarkType.Ellipse, ImageGear.Web.UI.MouseTool.HandPan);
    pageView.setContextMenuForTool
        (contextMenu, ImageGear.Web.UI.MarkType.Polygon, ImageGear.Web.UI.MouseTool.HandPan);
    pageView.setContextMenuForTool
        (contextMenu, ImageGear.Web.UI.MarkType.Text, ImageGear.Web.UI.MouseTool.HandPan);
    pageView.setContextMenuForTool
        (contextMenu, null, ImageGear.Web.UI.MouseTool.HandPan);