Html code :
<form action="" method="post" id="#get_pnr" >
        <h3>Enter your PNR number in the box below and click on "Get PNR Status" button to check your PNR status.</h3><br /><br />
			<table border="0">
			<tr><td><input type="text" name="txt1" placeholder="Enter Your PNR Number"></td></tr>
			<tr><td></td></tr>
			<tr><td><center><input type="submit" name="submit" value="pnr_status" id ="submit" ><center></td></tr>
	</table>

	</form>



AJAX code :

<script>
$(document).ready(function(){

$('#submit').click(function(){

$.post("retrieve_pnr.php", $("#get_pnr").serialize(),  function(response) {
 $('#success').html(response);

 //$('#success').hide('slow');
});
return false;


});

});
</script>

PHP code :

<?php


echo ' Hiiiiii <script type="text/javascript"> $(document).ready(function(){
               $("#get_pnr").hide();
            });</script>';



?>