Timepicker onClose: not trigering a calculate function.

Hi. I have whipped up some time calculation script using numerous  other scripts and everything is working like it should

i just need to click on the second input textbox after using the timepicker to select time that will insert itself to the text box.

What i found is that i could use a trigger after the selection has been done what is wrong and i dont understand is why is it

not triggering the function. Code below.

timedifference.php

<?php

function get_time_difference( $start, $end )
{
  $uts['start']      =    strtotime( $start );
  $uts['end']        =    strtotime( $end );
  if( $uts['start']!==-1 && $uts['end']!==-1 )
  {
    if( $uts['end'] >= $uts['start'] )
    {
      $diff    =    $uts['end'] - $uts['start'];
      if( $days=intval((floor($diff/86400))) )
      $diff = $diff % 86400;
      if( $hours=intval((floor($diff/3600))) )
      $diff = $diff % 3600;
      if( $minutes=intval((floor($diff/60))) )
      $diff = $diff % 60;
      $diff    =    intval( $diff );
      return( array('success'=>1, 'days'=>$days, 'hours'=>$hours, 'minutes'=>$minutes, 'seconds'=>$diff) );
      //return( array('success'=>1, 'days'=>$days, 'hours'=>$hours, 'minutes'=>$minutes, 'seconds'=>$diff) );
    }
    else
    {
      return(array('success'=>0, 'reason'=>'Algus kellaaeg on varasem kui lopp'));
    }
  }
  else
  {
    return(array('success'=>0, 'reason'=>'Vigane kellaaeg'));
  }
}

$start = $_GET['s'];
$end = $_GET['e'];

echo json_encode(get_time_difference( $start, $end ));

?>

main.php

half of the code.

										<script type="text/javascript">
									  $(document).ready(function() {
									    $("<?php echo "#".$end_time; ?>").blur(function(){
									      var start_time = $("<?php echo "#".$start_time; ?>").val();
									      var end_time = $("<?php echo "#".$end_time; ?>").val();
									      $.getJSON("include/timedifference.php?s="+start_time+"&e="+end_time, function(data){
									        var success = data.success;
									        if (success == 1) {
									          $("<?php echo "#".$difference; ?>" ).val(data.hours + " h " + data.minutes + " m ");
									         		if (data.hours + data.minutes/60 >= 6){
																$("<?php echo "#".$hours_difference; ?>").val(data.hours + data.minutes/60 - 0.5);
															}else {
									         			$("<?php echo "#".$hours_difference; ?>").val(data.hours + data.minutes/60);
															}
									        }
									        else {
									          $("#message").text("Viga! " + data.reason);
									        }
									      })
									    });
									  });
									</script>
											<script type="text/javascript">
												$(function(){
													$("<?php echo "#".$start_time; ?>").timepicker({
													<?php If($row['time_start'] == null){ ?>
														timeFormat: 'hh:mm:ss', hourMin: 1, hourMax: 23
													<?php } ?>
													<?php If($row['time_start'] == '10:00:00'){ ?>
														timeFormat: 'hh:mm:ss', hourGrid: 1, minuteGrid: 10, hourMin: 10, hourMax: 17
													<?php } ?>
													<?php If($row['time_start'] == '08:00:00'){ ?>
														timeFormat: 'hh:mm:ss', hourGrid: 1, minuteGrid: 10, hourMin: 8, hourMax: 17,
													<?php } ?>
													});

													$("<?php echo "#".$end_time; ?>").timepicker({
													<?php If($row['time_stop'] == null){ ?>
														timeFormat: 'hh:mm:ss', hourMin: 8, hourMax: 17
													<?php } ?>
													<?php If($row['time_stop'] == '17:30:00'){ ?>
														timeFormat: 'hh:mm:ss', hourGrid: 1, minuteGrid: 10, hourMin: 10, hourMax: 17
													<?php } ?>
													<?php If($row['time_stop'] == '19:00:00'){ ?>
														timeFormat: 'hh:mm:ss', hourGrid: 1, minuteGrid: 10, hourMin: 10, hourMax: 19,
														onClose: function() {
															get_time_difference( start_time, end_time );   <--// here is the problem....
														}
													<?php } ?>
													});
												});
											</script>
											<?php

										echo "<td><input type='text' name='$start_time' id='$start_time' onmouseout=''/></td>";
										echo "<td><input type='text' name='$end_time' id='$end_time' onmouseout=''/></td>";

										echo "<td><input id='".$hours_difference."' type='text' class='amt' value='' name='".$hours_difference."'/></td>";
?>

Please please help if you find what i have done wrong

the problem is here. How to call the function correctly?

<?php If($row['time_stop'] == '19:00:00'){ ?>
	timeFormat: 'hh:mm:ss', hourGrid: 1, minuteGrid: 10, hourMin: 10, hourMax: 19,
	onClose: function() {
	get_time_difference( start_time, end_time );   <--// here is the problem....
	}
<?php } ?>