if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 公司简介","About.asp?Title=公司简介"); // send no URL if nothing should happen onclick
		menu1.addItem("- 生产基地","About.asp?Title=生产基地");
		
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- 企业风貌", "About.asp?Title=企业风貌");
		menu4.addItem("- 荣誉资质", "About.asp?Title=荣誉资质");
	
		mtDropDown.renderAll();
	}