document.write('<div id="loading" style="text-align: center"><img src="datastore/images/loading.gif" width="32" height="32" alt="" border="0" align="center"><br><br>Trwa wyszukiwanie...</div>');

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  document.getElementById("loading").style.display="none";
  document.getElementById("loading_in").style.display="none";
});