function kalendar_show(datum,datum2) {
    $('#kalendar').html('<img src="images/loading.gif" alt="" style="margin-top:75px; margin-left:110px;" />');
    $.post("_kalendar.php", {
          datum: datum,
          datum2: datum2
      }, function(response){
          setTimeout("kalendar_echo('"+escape(response)+"')", 100);
      });
  }

  function kalendar_echo(response) {
    setTimeout( function() {
      $('#kalendar').html(unescape(response));
    }, 500);
  }