if((GetCookie("shopzhiwang","username")==null ||GetCookie("shopzhiwang","username")=="" )&&(GetCookie("shopzhiwang","shjianame")==""||GetCookie("shopzhiwang","shjianame")==null))
				{
					document.write("<a href=reg.asp class=smenu>Join Free</a>&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;<a href='login.asp' class=smenu>Sign In</a>");
				}
				else{document.write("<a class=smenu href='Logout.asp'>Logout</a>");}
				function GetCookie(sMainName, sSubName)  //equal to asp request.cookie(MainName)(sSubName) ,but it is work on client computer,don't need IIS Server support
				{
				var sCookieName = sMainName + "=";
				var sSubCookieName = (sSubName) ? sSubName + "=" : null;
				var sCookie;
				var sWholeCookie = document.cookie;
				var nValueBegin = sWholeCookie.indexOf(sCookieName);
				if(nValueBegin != -1){
					var nValueEnd = sWholeCookie.indexOf(";", nValueBegin);
				if (nValueEnd == -1)
					nValueEnd = sWholeCookie.length;
				var sValue = sWholeCookie.substring(nValueBegin + sCookieName.length, nValueEnd);
				if(sSubCookieName){
					var nSubValueBegin = sValue.indexOf(sSubCookieName);
					if(nSubValueBegin != -1){
						var nSubValueEnd = sValue.indexOf("&", nSubValueBegin);
						if(nSubValueEnd == -1)
						nSubValueEnd = sValue.length;
						var sSubValue = sValue.substring(nSubValueBegin + sSubCookieName.length, nSubValueEnd);
						return unescape(sSubValue);
					}
				}
				if(!sSubCookieName)
					return unescape(sValue);
				}
				return null;
				}