if (mtDropDown.isSupported()) {

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

		
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- hp", "Product.asp?BigClassName=hp");
		menu3.addItem("- 卡巴斯基反病毒软件", "Product.asp?BigClassName=卡巴斯基反病毒软件");
	    menu3.addItem("- sonicWall 防火墙产品", "Product.asp?BigClassName=sonicWall 防火墙产品");
		menu3.addItem("- 天诚综合布线产品", "Product.asp?BigClassName=天诚综合布线产品");
		menu3.addItem("- 安防", "Product.asp?BigClassName=安防");
		
		
		mtDropDown.renderAll();
	}