if (GDNetMenuDown.isSupported()) {

        var ms = new GDNetMenuDownSet(GDNetMenuDown.direction.down, 0, 0, GDNetMenuDown.reference.bottomLeft);

        var menu1 = ms.addMenu(document.getElementById("menu1"));

    	var menu2 = ms.addMenu(document.getElementById("menu2"));
menu2.addItem("企业简介", "company1.htm");
menu2.addItem("技术研发", "company2.htm");
//menu2.addItem("组织结构", "company3.htm");

    	var menu3 = ms.addMenu(document.getElementById("menu3"));
menu3.addItem("自动化立体仓库货架系统", "product11.htm");
menu3.addItem("横梁式货架", "product212.htm");
menu3.addItem("通廊式货架", "product211.htm");
menu3.addItem("重力式货架", "product215.htm");
menu3.addItem("自滑式货架", "product223.htm");
menu3.addItem("阁楼式货架", "product221.htm");
menu3.addItem("悬臂式货架", "product23.htm");
menu3.addItem("库架一体式货架", "product24.htm");
menu3.addItem("搁板式货架", "product25.htm");
menu3.addItem("输送机", "product3.htm");
menu3.addItem("周边设备", "product4.htm");

    	var menu4 = ms.addMenu(document.getElementById("menu4"));

    	var menu5 = ms.addMenu(document.getElementById("menu5"));


        GDNetMenuDown.renderAll();
    }