if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, -58, 1, mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- corpration profile","about_us.asp"); 
		menu1.addItem("- Company strategy","strategy.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- Strategic cooperation","cooperation.asp");
		menu1.addItem("- Company culture","culture.asp");
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- Products show ","product_show.asp"); 
		menu2.addItem("- Products Categories", "product_categories.asp");
		menu2.addItem("- Products Search", "product_search.asp");// send no URL if nothing should happen onclick
	
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- enterprise news", "news_company.asp");
		menu3.addItem("- Industry News", "news_industry.asp");
		
		// menu : 4
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- Inventory", "inventories.asp");
		menu4.addItem("- Trade Port", "trade.asp");
		
		// menu : 5
		var menu5 = ms.addMenu(document.getElementById("menu5"));
		menu5.addItem("- Messages", "feekback.asp");
		menu5.addItem("- Orders", "orders.asp");
		menu5.addItem("- Contact us", "contact_us.asp");

		mtDropDown.renderAll();
	}