var last    = document.lastModified;
var date    = new Date(last);
var browser = navigator.appName;

if (browser == 'Microsoft Internet Explorer') {
   document.write("last update on<br>" + 
   date.getDate() + nths(date.getDate()) + " " +
   months[date.getMonth()] + " " + date.getYear());
}
else if (browser == 'Netscape') {
   if ( date.getYear() >= 2000 ) {
      document.write("last update on<br>" +
      date.getDate() + nths(date.getDate()) + " " +
      months[date.getMonth()] + " " + date.getYear());
   }
   else if ( date.getYear() >= 100 ) {
      document.write("last update on<br>" + 
      date.getDate() + nths(date.getDate()) + " " +
      months[date.getMonth()] + " " + ( 1900 + date.getYear()));
   }
   else {
      document.write("last update on<br>" + 
      date.getDate() + nths(date.getDate()) + " " +
      months[date.getMonth()] + " " + ( 2000 + date.getYear()));
   }
}