function zdjecie(n) {
  var czas = 5000;
  var tablica = new Array(7);
  tablica[0] = "<img src=\"./../../UserFiles/migawki/1.jpg\" />";
  tablica[1] = "<img src=\"./../../UserFiles/migawki/2.jpg\" />";
  tablica[2] = "<img src=\"./../../UserFiles/migawki/3.jpg\" />";
  tablica[3] = "<img src=\"./../../UserFiles/migawki/4.jpg\" />";
  tablica[4] = "<img src=\"./../../UserFiles/migawki/5.jpg\" />";
  tablica[5] = "<img src=\"./../../UserFiles/migawki/6.jpg\" />";
  tablica[6] = "<img src=\"./../../UserFiles/migawki/7.jpg\" />";
  n = Math.floor(Math.random() * tablica.length-1);
  if (n < tablica.length-1) {
    n = (n+1);
  } else {
    n = 0;
  }
  document.getElementById("zdjecie").innerHTML = tablica[n];
  setTimeout("zdjecie("+n+")", czas);
}