if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, -5, 0, mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("  公司简介", "about.asp");
		menu1.addItem("  企业荣誉", "honor.asp");
		menu1.addItem("  企业文化", "about_culture.asp");
		menu1.addItem("  工程实例  ", "case.asp");
		
		
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("  企业动态  ", "news.asp?ClassID=1");
				
		
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("  DY168", "products.asp?classid=4");
		menu3.addItem("  DY001", "products.asp?classid=1");
		menu3.addItem("  DY002", "products.asp?classid=2");
		menu3.addItem("  DY003  ", "products.asp?classid=3");
		
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("  定货单", "guestbook.asp");
		menu4.addItem("  售后服务单  ", "guestbook2.asp");
		menu4.addItem("  意见箱", "guestbook3.asp");
		mtDropDown.renderAll();


	}