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

var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("互联网与企业",	"?action=text|admin|679|cn|23|4","_blank");
menu2.addItem("企业为什么要建网站？",	"?action=text|admin|679|cn|28|4","_blank");
menu2.addItem("域名相关知识介绍",	"?action=text|admin|679|cn|24|4","_blank");
menu2.addItem("电子商务ABC",	"?action=text|admin|679|cn|25|4","_blank");
menu2.addItem("关于网站维护",	"?action=text|admin|679|cn|26|4","_blank");
menu2.addItem("你问我答",	"?action=text|admin|679|cn|27|4","_blank");
menu2.addItem("联系我们",	"?action=text|admin|679|cn|39|4","_blank");
menu2.addItem("信息反馈",	"?action=ask|admin|679|cn|40|4","_blank");
var	menu3	=	ms.addMenu(document.getElementById("mainmenu3"));
menu3.addItem("公司历程",	"?action=text|admin|679|cn|14|1","_blank");
menu3.addItem("公司文化",	"?action=text|admin|679|cn|16|1","_blank");
menu3.addItem("测试页",	"?action=text|admin|679|cn|65|1","_blank");
var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("宣传型",	"?action=text|admin|679|cn|41|18","_blank");
menu4.addItem("增强宣传型",	"?action=text|admin|679|cn|42|18","_blank");
menu4.addItem("商务型",	"?action=text|admin|679|cn|43|18","_blank");
menu4.addItem("增强商务型",	"?action=text|admin|679|cn|44|18","_blank");
menu4.addItem("国际普及型",	"?action=text|admin|679|cn|45|18","_blank");
menu4.addItem("国际型",	"?action=text|admin|679|cn|46|18","_blank");
var	menu7	=	ms.addMenu(document.getElementById("mainmenu7"));
menu7.addItem("放飞心情、听听音乐",	"?action=text|admin|679|cn|66|12","_blank");
menu7.addItem("如何设置友情链接",	"?action=text|admin|679|cn|71|12","_blank");

			mtDropDown.renderAll();
		}
		//��ʼ�˵�
		window.onload = init;