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) {
         offset += search.length
         end = document.cookie.indexOf(";", offset)
         if (end == -1)
            end = document.cookie.length
         return unescape(document.cookie.substring(offset, end))
      }
   }
}
function delCookie(name){
   if (document.cookie != "") {
      thisCookie = document.cookie.split("; ")
      expireDate = new Date
      expireDate.setDate(expireDate.getDate()-1)
      document.cookie = name + "=" + escape(name) + ";expires=" + expireDate.toGMTString()
   }
}
function register(name) {
   var today = new Date()
   var expires = new Date()
   expires.setTime(today.getTime() + 1000*60*60)
   setCookie("timeshares", name, expires)
}
function filename() {
i=getCookie("timeshares");
if (i==null)
  register('0')
if (i==null)
  i=0
else
  i=parseInt(i)
i=i % msgList.length;
j=i++;
register(i);
return msgList[j]
}