if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- Imore","about.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- Certificate","Honor.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- Award","Img.asp");
		menu1.addItem("- Contact Us","Contact.asp");
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- Up-to-date news", "Tips.asp"); 
		menu2.addItem("- Industry News", "Yenews.asp");
		menu2.addItem("- Other News", "Other.asp");// send no URL if nothing should happen onclick
	
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- Product Show", "Product.asp");
		menu3.addItem("- Product Class", "Products.asp");
	    menu3.addItem("- Product Search", "Search.asp");
		
		// menu : 4
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- Contact Us", "Contact.asp");
		menu4.addItem("- Feedback", "Feedback.asp");

		mtDropDown.renderAll();
	}