var Wochentage = new Array("Sonntag","Montag","Dienstag",
   "Mittwoch", "Donnerstag", "Freitag", "Samstag");

var Monate = new Array("Januar", "Februar", "März",
   "April", "Mai", "Juni", "Juli","August","September",
   "Oktober", "November", "Dezember");

var Updated = new Date(document.lastModified); 
var Wochentag = Wochentage[Updated.getDay()]; 
var Monat = Monate[Updated.getMonth()]; 
var Tag = Updated.getDate(); 
var Jahr = Updated.getFullYear(); 
var Stunde = Updated.getHours(); 
var Minute = Updated.getMinutes(); 
if (Tag < 10) Tag = "0" + Tag; 
if (Minute < 10) Minute = "0" + Minute; 
var UpdateText="Letzte Aktualisierung am " +
Wochentag + ", " + Tag + ". " + Monat + " " + Jahr + 
" um " + Stunde + ":" + Minute ;
document.write(UpdateText);