if (mtDropDown.isSupported()) {
  var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);
  var menu1 = ms.addMenu(document.getElementById("menu1"));
  menu1.addItem("- 医院概况", "about.asp"); 
  menu1.addItem("- 医院技术", "hs-technique.asp");
  menu1.addItem("- 领导致辞", "address.asp");

  var menu2 = ms.addMenu(document.getElementById("menu2"));
  menu2.addItem("- 医院动态", "news1-yydt.asp");
  menu2.addItem("- 图片新闻", "news-tpxw.asp");
  
  //var menu3 = ms.addMenu(document.getElementById("menu3"));
  //menu3.addItem("- 网上预约", "wsyy.asp");
    
  //var subMenu0 = menu6.addMenu(menu6.items[3]);
  //subMenu0.addItem("- 学科资源", "listinfo.asp?class=105103103100");
  //subMenu0.addItem("- 文件服务", "listinfo.asp?class=105103103101");
  //subMenu0.addItem("- 视频点播", "listinfo.asp?class=105103103102");
  //subMenu0.addItem("- 邮件服务", "listinfo.asp?class=105103103103");

  mtDropDown.renderAll();
 }