if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("  公司简介","gylf.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("  企业文化","Qywh.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("  远景及价值观","Yjjjzg.asp");
		//menu1.addItem("  社会公益事业","Shgysy.asp");
		//menu1.addItem("  联系我们","Contact.asp");	
	
//第二菜单
       var menu2= ms.addMenu(document.getElementById("menu2"));
		//menu2.addItem("  产品目录", "Products.asp");
		//menu2.addItem("  产品展示", "Product.asp");
	    //menu2.addItem("  产品搜索", "search.asp");
		
		// menu : 3
		//var menu3 = ms.addMenu(document.getElementById("menu3"));
		//menu3.addItem("  供气方式", "gqfs.asp"); 
		//menu3.addItem("  工程案例", "gcal.asp"); // send no URL if nothing should happen onclick
	    
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("  友情链接", "link.asp"); 
		menu4.addItem("  添加链接", "addlinks.asp"); // send no URL if nothing should happen onclick
		
		mtDropDown.renderAll();
	}