function PickerFrom_OnDateChange(sender, eventArgs)
      {
        var fromDate = PickerFrom.getSelectedDate();
        var toDate = PickerTo.getSelectedDate();
        CalendarFrom.setSelectedDate(fromDate);
        if (fromDate > toDate)
        {
          PickerTo.setSelectedDate(fromDate);
          CalendarTo.setSelectedDate(fromDate);
        }
      }
      function PickerTo_OnDateChange(sender, eventArgs)
      {
        var fromDate = PickerFrom.getSelectedDate();
        var toDate = PickerTo.getSelectedDate();
        CalendarTo.setSelectedDate(toDate);
        if (fromDate > toDate)
        {
          PickerFrom.setSelectedDate(toDate);
          CalendarFrom.setSelectedDate(toDate);
        }
      }
      function CalendarFrom_OnChange(sender, eventArgs)
      {
        var fromDate = CalendarFrom.getSelectedDate();
        var toDate = PickerTo.getSelectedDate();
        PickerFrom.setSelectedDate(fromDate);
        if (fromDate > toDate)
        {
          PickerTo.setSelectedDate(fromDate);
          CalendarTo.setSelectedDate(fromDate);
        }
      }
      function CalendarTo_OnChange(sender, eventArgs)
      {
        var fromDate = PickerFrom.getSelectedDate();
        var toDate = CalendarTo.getSelectedDate();
        PickerTo.setSelectedDate(toDate);
        if (fromDate > toDate)
        {
          PickerFrom.setSelectedDate(toDate);
          CalendarFrom.setSelectedDate(toDate);
        }
      }
      function ButtonFrom_OnClick(event)
      {
        if (CalendarFrom.get_popUpShowing())
        {
          CalendarFrom.hide();
        }
        else
        {
          CalendarFrom.setSelectedDate(PickerFrom.getSelectedDate());
          CalendarFrom.show();
        }
      }
      function ButtonTo_OnClick(event)
      {
        if (CalendarTo.get_popUpShowing())
        {
          CalendarTo.hide();
        }
        else
        {
          CalendarTo.setSelectedDate(PickerTo.getSelectedDate());
          CalendarTo.show();
        }
      }
      function ButtonFrom_OnMouseUp(event)
      {
        if (CalendarFrom.get_popUpShowing())
        {
          event.cancelBubble=true;
          event.returnValue=false;
          return false;
        }
        else
        {
          return true;
        }
      }
      function ButtonTo_OnMouseUp(event)
      {
        if (CalendarTo.get_popUpShowing())
        {
          event.cancelBubble=true;
          event.returnValue=false;
          return false;
        }
        else
        {
          return true;
        }
      }