function setCookie(name, value, expire) {
   document.cookie = name + "=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString()))
}

function getCookie(Name) {
   var search = Name + "="
   if (document.cookie.length > 0) { 
      offset = document.cookie.indexOf(search)
      if (offset != -1) { // if cookie exists
         offset += search.length
         // set index of beginning of value
         end = document.cookie.indexOf(";", offset)
         // set index of end of cookie value
        if (end == -1) end = document.cookie.length
        return unescape(document.cookie.substring(offset, end))
      }
   }
}