if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, -16, 8, mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- About DCI","about.asp"); 
		menu1.addItem("- About TCI","about_tci.asp");
		menu1.addItem("- Equipments","products.asp?dl=Equipments");

		
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- Polymer Insulator Series", "products.asp?dl=PRODUCTS");
		menu2.addItem("- Lighting Arrester Series", "products.asp?id=481");
		menu2.addItem("- Composite Bushing Series", "products.asp?id=482");
		menu2.addItem("- Dropout Fuse Series", "products.asp?id=483");

		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- Catalogue", "features.asp");
		menu3.addItem("- Certificates", "features_e.asp");	
		menu3.addItem("- Technical Articles", "news.asp?dl=TECHNICAL%20ARTICLES");	
	
		
		mtDropDown.renderAll();
	}