protected void Calendar1_VisibleMonthChanged(object sender, MonthChangedEventArgs e)
{
   if ((e.NewDate.Year > e.PreviousDate.Year) ||
      ((e.NewDate.Year == e.PreviousDate.Year) &&
      (e.NewDate.Month > e.PreviousDate.Month)))
      lblMonthChanged.Text = "Moja przyszo jest taka jasna...";
   else
      lblMonthChanged.Text = "Powrt do przyszoci!";

   Calendar1.SelectedDates.Clear();
   lblSelectedUpdate();
   lblCountUpdate();
   txtClear();
}
