// ==================================================================================== Allgemeine JavaScript-Funktionen

// -------------------------------------------------------------------------------------------------- Bilder vertauschen

function tauschBild() {
  var i, j = 0, x, a = tauschBild.arguments;
  document.Bilderstapel = new Array;
  for (i = 0; i < (a.length-1); i += 2)
    if ((x = findeObj(a[i])) != null) {
      document.Bilderstapel[j++] = x;
      if (!x.Original)
        x.Original = x.src;
      x.src = a[i+1];
    }
}

// ----------------------------------------------------------------------------------- Vertauschte Bilder zurücktauschen

function tauschBildRueck() { //v3.0
  var i, x, a = document.Bilderstapel;
  for (i = 0; a && i < a.length && (x = a[i]) && x.Original; i++)
    x.src = x.Original;
}

// ------------------------------------------------------------------------------------------------------- Objekt finden

function findeObj(n, d) { //v4.01
  var p, i, x;
  if (!d)
    d = document;
  if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
    d = parent.frames[n.substring(p + 1)].document;
    n = n.substring(0, p);
  }
  if (!(x = d[n]) && d.all)
    x = d.all[n];
  for (i = 0; !x && i < d.forms.length; i++)
    x = d.forms[i][n];
  for (i = 0; !x && d.layers && i < d.layers.length; i++)
    x = findeObj(n, d.layers[i].document);
  if (!x && d.getElementById)
    x = d.getElementById(n);
  return x;
}