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

var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("国家的支持",	"/index.php/news/hnhxjz/1/cn/718/706.html","");
menu2.addItem("公司新闻",	"/index.php/news/hnhxjz/1/cn/719/706.html","");
menu2.addItem("企业风采",	"/index.php/news/hnhxjz/1/cn/720/706.html","");
menu2.addItem("行业信息",	"/index.php/news/hnhxjz/1/cn/721/706.html","");
var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("重点工程",	"/index.php/news/hnhxjz/1/cn/722/707.html","");
menu4.addItem("现场管理",	"/index.php/news/hnhxjz/1/cn/723/707.html","");
menu4.addItem("中标喜讯",	"/index.php/news/hnhxjz/1/cn/724/707.html","");
menu4.addItem("竣工战果",	"/index.php/news/hnhxjz/1/cn/725/707.html","");
var	menu5	=	ms.addMenu(document.getElementById("mainmenu5"));
menu5.addItem("优质工程集锦",	"/index.php/news/hnhxjz/1/cn/726/710.html","");
menu5.addItem("光辉荣耀",	"/index.php/news/hnhxjz/1/cn/727/710.html","");

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