if (mtDropDown.isSupported()) {

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

//第二菜单
		var menu1 = ms.addMenu(document.getElementById("menu1"));
		
		menu1.addItem("木丝吸音板", "chanpin.asp?sid=23"); 
		
		menu1.addItem("产品图案", "chanpin.asp?sid=21"); 
		
		menu1.addItem("木制吸音板", "chanpin.asp?sid=24"); 
		
		menu1.addItem("客厅背景墙", "chanpin.asp?sid=5"); 
		
		menu1.addItem("卧室背景墙", "chanpin.asp?sid=4"); 
		
		menu1.addItem("公司背景墙", "chanpin.asp?sid=19"); 
		
            
		// menu : 3
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		
		menu2.addItem("如何选材", "jiazhuang.asp?sid=1"); 
		
		menu2.addItem("如何装修", "jiazhuang.asp?sid=2"); 
		
		menu2.addItem("家居装饰", "jiazhuang.asp?sid=17"); 
		
		menu2.addItem("自己动手", "jiazhuang.asp?sid=18"); 
		
		menu2.addItem("背景墙图片", "jiazhuang.asp?sid=22"); 
		
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		
		menu3.addItem("商品手册", "read.asp?sid=8"); 
		
		menu3.addItem("在线阅读", "read.asp?sid=11"); 
		
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		
		menu4.addItem("尼莫展示架", "brand.asp?sid=29"); 
		
		var menu5 = ms.addMenu(document.getElementById("menu5"));
		
		menu5.addItem("卧室背景", "demo.asp?sid=26"); 
		
		menu5.addItem("客厅背景", "demo.asp?sid=27"); 
		
		menu5.addItem("公司背景", "demo.asp?sid=28"); 
		

		mtDropDown.renderAll();
	}