//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Funktionen des Projekts (ausser Menue)
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

var undefined;

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Funktion zum Bildertausch
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

var zaehler = 1;

function tausche_bilder() {

  var richtung = tausche_bilder.arguments[0];
  var bildid = tausche_bilder.arguments[1];
  var pfadname = tausche_bilder.arguments[2];
  var maximum = tausche_bilder.arguments[3];
  var pfad = new String();

  if (richtung == 'vor') {

    zaehler += 1;

  } else {

    zaehler -= 1;

  }

  if (zaehler == 0) {

    zaehler = maximum;

  }

  if (zaehler > maximum) {

    zaehler = 1;

  }

  pfad = String(pfadname + zaehler + '.jpg');

  document.images[bildid].src = pfad;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Funktion zum Öffnen der Fotogalerie
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

function galerie_oeffnen (x) {
  window.open(x,"Fenster1","width=475,height=630,directories=0,location=0,toolbar=0,scrollbars=0,status=0,resizable=0,menubar=0");
}

function station_oeffnen (x) {
  var win = window.open(x,"Fenster2","width=475,height=320,directories=0,location=0,toolbar=0,scrollbars=yes,status=0,resizable=0,menubar=0");
  win.focus();
}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Ein- und Ausblenden bzw. Auf- und Zuklappen der Layer
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

function ein_ausblenden() {

var divname = ein_ausblenden.arguments[0];
var wert = document.getElementById(divname).style.display;


  if(wert == "none" || wert == ""){
    wert = "block";
    document.getElementById(divname).style.display = wert;
  }

  else {
    wert = "none";
    document.getElementById(divname).style.display = wert;
  }

}