if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- KELING简介","about.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- KELING理念","ln.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- KELING人","ren.asp");
		
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 公司动态", "allnews.asp?class=1"); 
		menu2.addItem("- 行业资讯", "allnews.asp?class=2"); // send no URL if nothing should happen onclick
	
		
		
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 直插LED系列", "class.asp?LarCode=直插LED系列");
		menu3.addItem("- 大功率LED系列", "class.asp?LarCode=大功率LED系列");
		menu3.addItem("- SMD LED系列", "class.asp?LarCode=SMD LED系列");
		menu3.addItem("- 食人鱼LED系列", "class.asp?LarCode=食人鱼LED系列");

		
		// menu : 4
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- 联系我们", "lxwm.asp");
		menu4.addItem("- 网上订购", "http://www.keling-led.com/");

			
	
		mtDropDown.renderAll();
	}