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

var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("兰花",	"/userlist/pz/text-1349.html","");
var	menu5	=	ms.addMenu(document.getElementById("mainmenu5"));
menu5.addItem("名木古树移植技术",	"/index.php/news/pz/1/cn/980/948.html","");
menu5.addItem("病虫防治",	"/index.php/news/pz/1/cn/949/948.html","");
var	menu6	=	ms.addMenu(document.getElementById("mainmenu6"));
menu6.addItem("行业新闻",	"/index.php/news/pz/1/cn/933/932.html","");
var	menu7	=	ms.addMenu(document.getElementById("mainmenu7"));
menu7.addItem("客人来访",	"/userlist/pz/text-935.html","");
menu7.addItem("影象基地",	"/userlist/pz/text-936.html","");
var	menu9	=	ms.addMenu(document.getElementById("mainmenu9"));
menu9.addItem("在线留言",	"/index.php/guest/pz/1/cn/945/944.html","");

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