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

var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("Introduction",	"/userlist/nwkss/text-57520.html","");
menu2.addItem("Our Advantage",	"/userlist/nwkss/text-57551.html","");
menu2.addItem("Our Mission",	"/userlist/nwkss/text-57552.html","");
var	menu3	=	ms.addMenu(document.getElementById("mainmenu3"));
menu3.addItem("General freight forwarding service & Warehouse",	"#","");
menu3.addItem("Customs brokerage & Product national standard appr",	"/userlist/nwkss/text-57546.html","");
menu3.addItem("Cargo insurance",	"/userlist/nwkss/text-57547.html","");
var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("Customs clearance service",	"/index.php/list/nwkss/1/en/57523/57523.html","");
menu4.addItem("Transportation project",	"/index.php/list/nwkss/1/en/57543/57523.html","");
menu4.addItem("Storage service",	"/index.php/list/nwkss/1/en/57544/57523.html","");

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