if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 金塔概况","into.asp?typeid=1");
		menu1.addItem("- 销售网络","into.asp?typeid=4");

//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 公司内部资料", "news1.asp");
		menu2.addItem("- 公司内部新闻", "news2.asp"); 
		menu2.addItem("- 公司对外新闻", "news.asp?classid=2&boardid=5"); 
		menu2.addItem("- 公司内部文件", "news3.asp"); 
		// send no URL if nothing should happen onclick
	
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 电缆证书", "honor.asp?classid=3&boardid=6");
		
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- 生产设备", "sb.asp?classid=7&boardid=23");
		menu4.addItem("  - 铝包钢设备", "sb.asp?classid=7&boardid=24");
		menu4.addItem("  - 电缆设备", "sb.asp?classid=7&boardid=23");
		menu4.addItem("- 检测设备", "sb1.asp");
		
		mtDropDown.renderAll();
	}