// browserdetect

  var ua = window.navigator.userAgent.toLowerCase();
  var version = window.navigator.appVersion.toLowerCase();
  var nummer = version.substr(0, version.indexOf("."));

  // browser
  var nets   = ((ua.indexOf("mozilla")<1) && (ua.indexOf("spoofer")<1) && (ua.indexOf("compatible")<1) && (ua.indexOf("opera")<1) && (ua.indexOf("safari")<1));
  var msie   = (ua.indexOf("msie") > 0);
  var safari = (ua.indexOf("safari") > 0);

  // platform
  var mac = (ua.indexOf("mac")!=-1);
  var win = ((ua.indexOf("win")!=-1) || (ua.indexOf("16bit")!=-1));

  // version
  if (nets)
    {
      var browserversion = nummer;
    }
  else if (msie)
    {
      if (nummer < 4)
        var browserversion = 3;
      if (nummer >= 4 && version.indexOf("msie 5")==-1 && version.indexOf("msie 6")==-1)
        var browserversion = 4;
      if (nummer >= 4 && version.indexOf("msie 5")!=-1 && version.indexOf("msie 6")==-1)
        var browserversion = 5;
      if (nummer >= 4 && version.indexOf("msie 6")!=-1 && version.indexOf("msie 5")==-1)
        var browserversion = 6;
    }

// navigation

  function seiteLaden(seite)
    {
      switch(seite)
        {
          case "start" :       parent.nav.location.href = "navigation_s.html";
                               parent.inhalt.location.href = "start.html"; break;
          case "start_unter" : parent.parent.nav.location.href = "navigation_s.html";
                               parent.parent.inhalt.location.href = "start.html"; break;
          case "veroe" :       parent.nav.location.href = "navigation_v.html";
                               parent.inhalt.location.href = "frameset_veroeffent.html"; break;
          case "veroe_unter" : parent.parent.nav.location.href = "navigation_v.html";
                               parent.parent.inhalt.location.href = "frameset_veroeffent.html"; break;
        }
    }

  function artikelLaden(nummer)
    {
      parent.nav.location.href = "navigation_v.html";
      parent.inhalt.location.href = "frameset_artikel_"+nummer+".html";
    }

  function veroeffLaden(num)
    {
      parent.nav.location.href = "navigation_v.html";
      parent.inhalt.location.href = "frameset_veroeffent_"+num+".html";
    }