function auf(bildertausch) {

// Die folgenden 3 Zeilen sind fuer Netscape 6
if (document.getElementById) {
document.getElementById(bildertausch).style.visibility="visible";
}
// Ende Netscape 6


if (document.all) {
document.all[bildertausch].style.visibility="visible";
}

if (document.layers) {
document.layers[bildertausch].visibility="visible";
}
}

function zu(bildertausch) {

// Die folgenden 3 Zeilen sind fuer Netscape 6
if (document.getElementById) {
document.getElementById(bildertausch).style.visibility="hidden";
}
// Ende Netscape 6

if (document.all) {
document.all[bildertausch].style.visibility="hidden";
}

if (document.layers) {
document.layers[bildertausch].visibility="hidden";
}
}

function MM_swapImgRestore() { //v2.0
  if (document.MM_swapImgData != null)
    for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
        document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
}

function MM_swapImage() { //v2.0
  var i,j=0,objStr,obj,swapArray=new Array,oldArray=document.MM_swapImgData;
  for (i=0; i < (MM_swapImage.arguments.length-2); i+=3) {
    objStr = MM_swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1];
    if ((objStr.indexOf('document.layers[')==0 && document.layers==null) ||
        (objStr.indexOf('document.all[')   ==0 && document.all   ==null))
      objStr = 'document'+objStr.substring(objStr.lastIndexOf('.'),objStr.length);
    obj = eval(objStr);
    if (obj != null) {
      swapArray[j++] = obj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=obj)?obj.src:oldArray[j];
      obj.src = MM_swapImage.arguments[i+2];
  } }
  document.MM_swapImgData = swapArray; //used for restore
}

function neuesfenster(zieldatei)
{
window.open(zieldatei, "", "top=10, left=10, width=800, height=600, toolbar=no, titlebar=YES, status=YES, resizable=YES, menuebar=YES, scrollbars=YES");
}