if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu3"));
		
		menu1.addItem("- 业内资讯","ynzx.asp?owen1=新闻公告&owen2=业内资讯"); // send no URL if nothing should happen onclick
		menu1.addItem("- 芝兰日志","zlrz.asp?owen1=新闻公告&owen2=芝兰日志");
		menu1.addItem("- 芝兰公告","zlgg.asp?owen1=新闻公告&owen2=芝兰公告");	

	
		// menu : 2
		var menu2 = ms.addMenu(document.getElementById("menu4"));
		menu2.addItem("- 网上订购", "wsgw.asp");
		menu2.addItem("- 键盘乐器", "Product.asp?BigClassName=键盘乐器");
		menu2.addItem("- 民族乐器", "Product.asp?BigClassName=民族乐器");
                menu2.addItem("- 管弦乐器", "Product.asp?BigClassName=管弦乐器");
                menu2.addItem("- 乐器配件", "Product.asp?BigClassName=乐器配件");
                menu2.addItem("- 音乐书籍", "Product.asp?BigClassName=音乐书籍");
		
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu2"));
		menu3.addItem("- 芝兰简介", "about.asp");
		
		
		// menu : 4
		var menu4 = ms.addMenu(document.getElementById("menu5"));
		menu4.addItem("- 网上报名", "wszs.asp");
		menu4.addItem("- 艺术培训", "yspx.asp?owen1=培训中心&owen2=艺术培训");
		menu4.addItem("- 师资介绍", "szjs.asp?owen1=培训中心&owen2=师资介绍");
		menu4.addItem("- 音乐知识", "yyzs.asp?owen1=培训中心&owen2=音乐知识");
        menu4.addItem("- 乐曲欣赏", "yqxs.asp?owen1=培训中心&owen2=乐曲欣赏");
	
		mtDropDown.renderAll();
	}