function ShowMonth() {
  var jetzt = new Date();
  var Jahresmonat = jetzt.getMonth();
  var Monat = new
  Array("Januar","Februar","März","April","Mai","Juni",
        "Juli","August","September","Oktober","November","Dezember");
  document.write(Monat[Jahresmonat]);
}

function OpenGB() {
  window.open("gb.htm",
              "_blank","width=700,height=500,left=20,top=20,location=no,menubar=no,status=no,toolbar=no");
}