if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 1  , mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("企业简介", "brief.asp");
		menu1.addItem("企业价值", "value.asp");
		menu1.addItem("大事记", "dsj.asp");
		menu1.addItem("重要客户", "customer.asp");
 
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("产品品牌", "brand.asp");
		menu2.addItem("泵类工程", "pump.asp");

		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("技术公报", "jsgb.asp?classid=3");
		menu3.addItem("企业新闻", "news.asp");
		menu3.addItem("Winston快报", "kb.asp?classid=4");

		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("资料下载", "zlxz.asp?classid=1");
		menu4.addItem("资料邮寄", "zlyj.asp");

        var menu5 = ms.addMenu(document.getElementById("menu5"));
		menu5.addItem("总部及海外", "contact.asp");
		menu5.addItem("中国分公司", "contact2.asp");

		mtDropDown.renderAll();
	}