function Datum(){
  var monate = new
    Array("Januar","Februar","März","April","Mai","Juni",
      "Juli","August","September","Oktober","November","Dezember");
  var wotage = new
    Array("Sonntag","Montag","Dienstag","Mittwoch","Donnerstag","Freitag","Samstag");
      
  var wochentag;
  var d=new Date();
  tag=d.getDate();
  monat=d.getMonth();
  wt=d.getDay();
  jahr=d.getFullYear();
  /*
  switch (wt){
  case 0: wochentag="Sonntag"; break;
  case 1: wochentag="Montag"; break;
  case 2: wochentag="Dienstag"; break;
  case 3: wochentag="Mittwoch"; break;
  case 4: wochentag="Donnerstag"; break;
  case 5: wochentag="Freitag"; break;
  case 6: wochentag="Samstag"; break;
  }
  */
  if (document.getElementById)
    document.getElementById("Dat").innerHTML = wotage[wt]+', '+tag+'. '+monate[monat]+' '+jahr;
}