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", "index.htm");
		menu1.addItem("组织架构", "main1-1.htm");
		menu1.addItem("经营范围", "main1-2.htm");
		menu1.addItem("公司荣誉", "main1-3.htm");
		menu1.addItem("服务合作", "main1-4.htm");
		menu1.addItem("施工设备", "main1-5.htm");

		
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("公司新闻", "news.html");
		menu2.addItem("行业动态", "index.html");
		menu2.addItem("综合信息", "index.html");

		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("企业宗旨", "tenet.htm");
		menu3.addItem("企业战略", "stratagem.htm");
		menu3.addItem("企业理念", "faith.htm");
		menu3.addItem("学习之窗", "index.html");
		menu3.addItem("文化活动", "index.html");
		menu3.addItem("公司相册", "photo.html");

		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("人力资源", "index.html");
		menu4.addItem("简历投递", "index.html");
		menu4.addItem("联系方式", "address.html");

		mtDropDown.renderAll();
	}