if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0  , mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("关于我们", "about.html");
		menu1.addItem("董事长致词", "ceo.html");
		menu1.addItem("企业荣誉", "honor.html");
		menu1.addItem("发展历程", "history.html");
		menu1.addItem("企业文化", "culture.html");
		menu1.addItem("公司全貌", "photo.html");
		menu1.addItem("生产车间", "workshop.html");
 
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("公司新闻   ", "news.html");
		menu2.addItem("大事记", "events.html");
		
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("本厂主要起草、参加起草标准、计量检定规程、规范", "law_4.html");
		menu3.addItem("法规文件", "law_5.html");
		menu3.addItem("技术标准", "law_6.html");
		menu3.addItem("产品标准", "law_7.html");
		menu3.addItem("计量检定规程、规范", "law_8.html");		
		menu3.addItem("其他", "law_3.html");
		
        var menu6 = ms.addMenu(document.getElementById("menu6"));
		menu6.addItem("售后服务   ", "service.html");
		menu6.addItem("在线询盘", "order.html");

		mtDropDown.renderAll();
	}