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

var	menu2	=	ms.addMenu(document.getElementById("mainmenu2"));
menu2.addItem("公司简介",	"?action=text|xiangjun|197|cn|75|69","_blank");
menu2.addItem("新闻中心",	"?action=news|xiangjun|197|cn|76|69","_blank");
var	menu3	=	ms.addMenu(document.getElementById("mainmenu3"));
menu3.addItem("行业方案",	"?action=news|xiangjun|197|cn|77|70","_blank");
menu3.addItem("相关产品",	"?action=list|xiangjun|197|cn|78|70","_blank");

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