if (mtDropDown.isSupported()) {

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

		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("- 开放时间","Opentime.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- 规章制度","Culture.asp"); // send no URL if nothing should happen onclick
		menu1.addItem("- 机构设置","Structas.asp");
		menu1.addItem("- 馆藏分布","Structfb.asp");
		menu1.addItem("- 馆舍风貌","Outlook.asp");
		menu1.addItem("- 联系我们","Contact.asp");
	
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- 简单检索", "http://mylib.zhbit.com:8080/opac/search.php"); 
		menu2.addItem("- 复杂检索", "http://mylib.zhbit.com:8080/opac/search_more.php"); // send no URL if nothing should happen onclick
	
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 中文数据库", "Product.asp?BigClassName=中文数据库");
		menu3.addItem("- 英文数据库", "Product.asp?BigClassName=英文数据库");
	        menu3.addItem("- 试用数据库", "Product.asp?BigClassName=试用数据库");
                menu3.addItem("- 多媒体资料库", "dload.asp");
		menu3.addItem("- 随书光盘库", "download.asp");
		
		// menu : 4
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- 借书还书", "Back.asp");
		menu4.addItem("- 预约续借", "continue.asp");
		menu4.addItem("- 新书通报", "http://mylib.zhbit.com:8080/opac/newbook_cls_browse.php");
		menu4.addItem("- 读者荐购", "http://mylib.zhbit.com:8080/asord/asord_redr.php");
		menu4.addItem("- 图书捐赠", "donation.asp");
		
		
		// menu : 5
		var menu5 = ms.addMenu(document.getElementById("menu5"));
		menu5.addItem("- 新生指南", "sguide.asp");
                menu5.addItem("- FAQ 检索", "faq.asp");
		menu5.addItem("- 在线咨询", "question.asp");
		menu5.addItem("- 软件下载", "toolsw.asp");
		menu5.addItem("- 参考工具", "tool.asp");
	
		mtDropDown.renderAll();
	}