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

var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("关于傲宇",	"http://www.aoyuls.com/userlist/aoyuls/text-427.html","");
menu2.addItem("资质荣誉",	"/userlist/aoyuls/text-479.html","");

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