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

var	menu1	=	ms.addMenu(document.getElementById("mainmenu1"));
menu1.addItem("资质证书",	"/zzzs.asp","_blank");
var	menu4	=	ms.addMenu(document.getElementById("mainmenu4"));
menu4.addItem("光热技术",	"/grjs.asp","_blank");
menu4.addItem("光电技术",	"/gdjs.asp","_blank");
menu4.addItem("太阳能采暖",	"/tyncn.asp","_blank");
menu4.addItem("建筑一体化",	"/jzyth.asp","_blank");
var	menu5	=	ms.addMenu(document.getElementById("mainmenu5"));
menu5.addItem("热水器",	"/rsq.asp","_blank");
menu5.addItem("集热器",	"/jrq.asp","_blank");
menu5.addItem("保温水箱",	"/bwsx.asp","_blank");
menu5.addItem("控制器",	"/kzq.asp","_blank");
menu5.addItem("设备及配件",	"/sbjpj.asp","_blank");
var	menu7	=	ms.addMenu(document.getElementById("mainmenu7"));
menu7.addItem("服务宗旨与理念",	"/fwzx1.asp","_blank");
menu7.addItem("常见问题与解决办法",	"/fwzx2.asp","_blank");
menu7.addItem("服务热线",	"/fwzx3.asp","_blank");

			mtDropDown.renderAll();
		}
		//初始菜单
		window.onload = init;