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

var	menu3	=	ms.addMenu(document.getElementById("mainmenu3"));
menu3.addItem("新闻资讯",	"/userlist/lingshangkeji/text-17002.html","");
menu3.addItem("行业资讯",	"/userlist/lingshangkeji/text-17003.html","");
menu3.addItem("视频中心",	"/userlist/lingshangkeji/text-17004.html","");
var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("产品列表",	"/index.php/list/lingshangkeji/1/cn/16995/16987.html","");
var	menu5	=	ms.addMenu(document.getElementById("mainmenu5"));
menu5.addItem("建筑",	"/userlist/lingshangkeji/text-17005.html","");
menu5.addItem("防腐",	"/userlist/lingshangkeji/text-17006.html","");
menu5.addItem("LED、电子",	"/userlist/lingshangkeji/text-17007.html","");
menu5.addItem("汽车",	"/userlist/lingshangkeji/text-17008.html","");
menu5.addItem("太阳能",	"/userlist/lingshangkeji/text-17009.html","");
menu5.addItem("机场、道路",	"/userlist/lingshangkeji/text-17010.html","");
var	menu6	=	ms.addMenu(document.getElementById("mainmenu6"));
menu6.addItem("技术服务",	"/userlist/lingshangkeji/text-16980.html","");
menu6.addItem("资料下载",	"/userlist/lingshangkeji/text-16981.html","");
menu6.addItem("专业期刊",	"/userlist/lingshangkeji/text-16982.html","");
var	menu7	=	ms.addMenu(document.getElementById("mainmenu7"));
menu7.addItem("人才理念",	"/userlist/lingshangkeji/text-16991.html","");
menu7.addItem("职位招聘",	"/userlist/lingshangkeji/text-16992.html","");
var	menu8	=	ms.addMenu(document.getElementById("mainmenu8"));
menu8.addItem("在线留言",	"/userlist/lingshangkeji/diyform-16978.html","");

			mtDropDown.renderAll();
		}
		//初始菜单
		window.onload = init;