// Browser detection
var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var NS4 = (bName == "Netscape" && bVer == 4);
var MOZ = (bName == "Netscape" && bVer >= 5);
var IE4 = (bName == "Microsoft Internet Explorer" && bVer >= 4);

// Icons im Head (in einem div) austauschen
var HeadArray = new Array();
var HeadActivated = new Array();
function changeHeadImg(imageNo, mode) {
  if ((MOZ || IE4 || NS4) && HeadActivated[imageNo]) {
    if (NS4) {
      self.document.layers["buttons"].document.images["head_"+imageNo].src = HeadArray[imageNo][mode].src;
    } else if (MOZ) {
      self.document.images["head_"+imageNo].src = HeadArray[imageNo][mode].src;
    } else {
      eval("self.document.all.head_" + imageNo + ".src = HeadArray[" + imageNo + "][" + mode + "].src");
    }
  }
}

// Layer ein- und ausblenden
var layerRef="null",styleSwitch="null";
if (NS4) {
  layerRef='document.layers["';
  styleSwitch='"]';
} else if (MOZ) {
  layerRef="self.document.getElementById('";
  styleSwitch="').style";
} else {
  layerRef='document.all["';
  styleSwitch='"].style';
}
function hideLayer(layerName){
  eval(layerRef+layerName+styleSwitch+'.visibility="hidden"');
}
function showLayer(layerName){
 eval(layerRef+layerName+styleSwitch+'.visibility="visible"');
}

// Reload nach Resize jetzt nur noch beim NS4
function my_reload () {
  if (NS4) { window.location.reload(); }
}