function onComplete(responseText, responseXML)
{
  var dataDiv = document.getElementById("dataDiv");
  str = "<img src='" + responseText + "' alt='" + responseText;
  str += "'>";
  dataDiv.innerHTML = str;
  pobrany = true;
}

function onEnd()
{
  onprogress = false;
  if(!pobrany){
    var dataDiv = document.getElementById("dataDiv");
    dataDiv.innerHTML = "Wybrany obraz nie jest dostępny.";
  }
}
