if (mtDropDown.isSupported()) {

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


		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 玻璃加工相關產品", "product.html");
		menu3.addItem("- 觸摸屏相關產品", "product1.html");
		menu3.addItem("- 研磨拋光相關產品", "product2.html");

		mtDropDown.renderAll();
	}