function setCookie(userName2Cookie) { 
   var expireDate = new Date;
   expireDate.setDate(expireDate.getMonth()+1);
   document.cookie = "userName=" + userName2Cookie;
//   document.cookie = "userName=" + userName2Cookie + ";expires="+ expireDate.toGMTString();
}

function getCookie() { 
   if (document.cookie != null && document.cookie != "") {
      userNameFromCookie = document.cookie.split("=")[1];
   } else {
      userNameFromCookie = "";
   }
   return userNameFromCookie;
}