if (mtDropDown.isSupported()) {

    var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);
    var menu1 = ms.addMenu(document.getElementById("menu1"));
    menu1.addItem("院情简介", "/html/yqjj/Index.html");
    menu1.addItem("机构设置", "/html/yqjj/Index_64.html");
    menu1.addItem("工作职责", "/html/yqjj/Index_65.html");
    var menu3 = ms.addMenu(document.getElementById("menu3"));
    menu3.addItem("国家中心", "/html/jcnl/gjzx/");
    menu3.addItem("检测中心", "/html/jcnl/jczx/");
    menu3.addItem("认证资质", "/html/jcnl/rzzz/");
    menu3.addItem("业务介绍", "/html/jcnl/ywjs/");
    menu3.addItem("特色项目", "/html/jcnl/tsxm/");
    var menu4 = ms.addMenu(document.getElementById("menu4"));
    menu4.addItem("业务流程", "/html/khzx/ywlc/");
    menu4.addItem("表单下载", "/html/khzx/bdxz/");
    menu4.addItem("收费公示", "/html/khzx/sfbzz/");
    menu4.addItem("创客天地", "/html/jcnl/gjzx/cktd/");
    var menu9 = ms.addMenu(document.getElementById("menu9"));
    menu9.addItem("联系方式", "/html/lxwm/Index.html");
    menu9.addItem("地图", "/html/lxwm/Index_2.html");

    mtDropDown.renderAll();
}
init();