//old Kommentar...
var strOldKom = "";

//browser values...
blnIE = 0;
blnNS = 0;
blnNS4 = 0;
blnNS6 = 0;
var strBrowser = ((navigator.appName) + (parseFloat(navigator.appVersion)));
if(navigator.appName.indexOf("Explorer") >= 0) {
  blnIE = 1;
}
else {
  blnNS = 1;
  if(strBrowser.indexOf("Netscape4") >= 0) {
    blnNS4 = 1;
  }
  else {
    blnNS6 = 1;
  }
}

//get the layer...
function getElementById(id) {
  var el = document.getElementsByTagName("div");
  var i;
  for(i = 0;i < el.length;i++) {
    if(el[i].id == id) {
      return el[i];
    }
  }
  return null;
}

//show Kommentar...
function showKommentar(strKom) {
  var strKom;
  //first hide old Kommentar if available...
  if(strOldKom != "") {
    if((blnNS) && (document.layers)) {
      document.layers[''+strOldKom].visibility = "hide";		
    }
    else {
      var el = getElementById(strOldKom);
      el.style.visibility = "hidden";
    }
  }
  //show it...
  strOldKom = strKom;
  if((blnNS) && (document.layers)) {
    document.layers[''+strKom].visibility = "show";
  }
  else {
    var el = getElementById(strKom);
    el.style.visibility = "visible";
  }
}