document.write("<style type='text/css'>#link_poprzedni, link_nastepny {visibility:visible;}</style>");

function loadPhoto() {
  imageid1 = 'link_poprzedni';
  image1 = document.getElementById(imageid1);
  imageid2 = 'link_nastepny';
  image2 = document.getElementById(imageid2);
  setOpacity(image1, image2, 100);

  image1.style.visibility = 'visible';
  fadeIn(imageid1, imageid2, 100);

  //if (navigator.appName == 'Opera') {
  //  image1.style.visibility = 'hidden';
  //  image2.style.visibility = 'hidden';
  //}
}

function setOpacity(obj1, obj2, opacity) {
  opacity = (opacity == 100)?99.999:opacity;

  // ieWin
  obj1.style.filter = "alpha(opacity:"+opacity+")";
  obj2.style.filter = "alpha(opacity:"+opacity+")";
  // safari<1.2, konqueror
  obj1.style.KHTMLOpacity = opacity/100;
  obj2.style.KHTMLOpacity = opacity/100;
  // older Mozilla and firefox
  obj1.style.MozOpacity = opacity/100;
  obj2.style.MozOpacity = opacity/100;
  // safari 1.2, newer firefox and mozilla, CSS3
  obj1.style.opacity = opacity/100;
  obj2.style.opacity = opacity/100;
}

function fadeIn(objId1, objId2, opacity) {
  if (document.getElementById) {
    obj1 = document.getElementById(objId1);
    obj2 = document.getElementById(objId2);
    if (opacity >= 0) {
      setOpacity(obj1, obj2, opacity);
      opacity -= 10;
      window.setTimeout("fadeIn('"+objId1+"','"+objId2+"',"+opacity+")", 100);
    }
  }
}