// PopUps
function openWindow(theURL,winName,features) { //v2.0  
  mainwindow = window.open(theURL,winName,features);
  mainwindow.focus();
}

// Dropdownmenu Menuleiste
function Go (select) {
  var wert = select.options[select.options.selectedIndex].value;
  if (wert == "leer") {
    select.form.reset();
    return;
  } else {
   
     window.location.href = wert;

  }
}