if (mtDropDown.isSupported()) {

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

	var menu1 = ms.addMenu(document.getElementById("menu1"));
	menu1.addItem("公司介绍", "company_01.asp");
	menu1.addItem("公司理念", "company_02.asp");
	var menu2 = ms.addMenu(document.getElementById("menu2"));
	menu2.addItem("产品展示", "product_01.asp");
	menu2.addItem("最新产品", "product_02.asp");
	

	mtDropDown.renderAll();
}