function pasekPostepu(where, howMany, howFast) {
var pre_url = (("https:" == document.location.protocol) ? "https://" : "http://");
 var iCounter = 0;
 var pasekPostepuI = 0;
 for (var iCounter = 0; iCounter < howMany; iCounter++) {
  $(where).append('<div id="pasek-' + iCounter + '"><img src="'+pre_url+'www.biletylotnicze.pl/media/img/icons/logo-mini.png" alt=""/></div>');
 }
 function pasekPostepuGo() {
  $(where + ' div').removeClass('aktywny');
  $('#pasek-' + pasekPostepuI).addClass('aktywny');
  pasekPostepuI = (pasekPostepuI + 1) % howMany;
  setTimeout(pasekPostepuGo, howFast);
 }
 pasekPostepuGo();
}