if (mtDropDown.isSupported()){

		var ms = new mtDropDownSet(mtDropDown.direction.down, 20, -1, mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("   主要产品   ", "bar3.asp");
		menu1.addItem("   客户服务   ", "custom.asp");
		
		
		//var menu2 = ms.addMenu(document.getElementById("menu2"));
		
	
		
		//var menu3 = ms.addMenu(document.getElementById("menu3"));
		//menu3.addItem("   气密窗系列 ", "#");
		//menu3.addItem("   平开窗系列 ", "#");
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("   公司新闻   ", "bar2.asp?ClassID=1");
		menu4.addItem("   行业动态   ", "bar2.asp?ClassID=8");
		
		var menu5= ms.addMenu(document.getElementById("menu5"));
		menu5.addItem("   生产设备 ", "bar4.asp?ClassID=31");
		menu5.addItem("   检测设备 ", "bar4.asp?ClassID=32");
		menu5.addItem("   工艺流程 ", "bar4.asp?ClassID=33");
		var menu6= ms.addMenu(document.getElementById("menu6"));
		menu6.addItem("   公司简介   ", "bar1.asp");
		menu6.addItem("   企业荣誉   ", "bar1.asp?ID=24");
		menu6.addItem("   联系我们   ", "bar1.asp?ID=29");
		
		mtDropDown.renderAll();
	}