function SetCookie(cookieName, cookieValue, nDays) {
   var today = new Date();
   var expire = new Date();

   if (nDays==null || nDays==0) {
      nDays=1;
   }

   expire.setTime(today.getTime() + 3600000*24*nDays);
   document.cookie = cookieName+"="+escape(cookieValue) + ";expires="+expire.toGMTString();
}

function GetOffset() {
   var Now = new Date();
   var Offset = Now.getTimezoneOffset();

   return Offset;
}

function SetOffset() {
   var Offset = GetOffset();
   SetCookie('F4U_Offset', Offset, 90);
}