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

var	menu3	=	ms.addMenu(document.getElementById("mainmenu3"));
menu3.addItem("公司历程",	"/userlist/admin/text-148.html","");
menu3.addItem("公司文化",	"/userlist/admin/text-149.html","");

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