if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 水处理设备工程事业部","pr1.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- 水处理药剂事业部","pr2.asp"); // send no URL if nothing should happen onclick
		
		
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 行业信息","list1.asp?t=行业信息"); // send no URL if nothing should happen onclick
		menu2.addItem("- 行业标准","list1.asp?t=行业标准"); // send no URL if nothing should happen onclick
		
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 关于天大华森","show.asp?t=关于天大华森"); // send no URL if nothing should happen onclick
				menu3.addItem("- 公司荣誉","list.asp?t=公司荣誉");
			menu3.addItem("- 质量保证","list.asp?t=质量保证");
			menu3.addItem("- 组织结构","show.asp?t=组织结构");
			menu3.addItem("- 成功案例","show.asp?t=合作伙伴");
		mtDropDown.renderAll();
		
	}