if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));

        menu1.addItem("- 国内线路","xw.asp?id=3");
		menu1.addItem("- 省内线路","xw.asp?id=4");
		menu1.addItem("- 国际线路","xw.asp?id=5");
		menu1.addItem("- 最新线路","xw.asp?id=6");
		menu1.addItem("- 旅游地图","xw.asp?id=7");




		mtDropDown.renderAll();
	}