jQuery to update database query

Hello everyone. I posted about this on many php forum and noone responded 🙁 hoping someone can direct me here.

So I have some PHP to extract some data from mysql. It works fine..

<table>
	<th>Statut</th>
	<th>Sous Jacent</th>
	<th>Sens</th>
	<th>Entrée</th>
	<th>Stop</th>
	<th>Objectifs</th>
<?php

$datab_name = $wpdb->prefix . "trades";
$alltrades = $wpdb->get_results(
	"
	SELECT *
	FROM $datab_name
	WHERE status = 'En cours'
		AND tk_live = 0
	OR status = 'En attente'
		AND tk_live = 0
	"
);

foreach ( $alltrades as $alltrades )
{	$sens = $alltrades->sens;
	$entree = $alltrades->entree;
	$sortie = $alltrades->sortie;
	?> <tr>
	<td><?php echo $alltrades->status;?></td>
	<td><?php echo $alltrades->sous_jacent;?></td>
	<td><?php echo $alltrades->sens;?></td>
	<td><?php echo $entree;?><br><?php echo $alltrades->date_entree;?></td>
	<td><?php echo $alltrades->stop;?></td>
	<td><?php echo $alltrades->objectif1;?>
		<br><?php echo $alltrades->objectif2;?>
		<br><?php echo $alltrades->objectif3;?></td>
	</tr>
<?php }

 ?>
</table>

Then I wanted this table to be updated automatically without a page refresh, so used a script that will refresh the div, the script loads my table (since the headings are loaded) but does not seem to execute my php script (query the database.)

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.0/jquery.min.js"></script>
<script type="text/javascript">

$(document).ready(function() {

$("#loaddiv").fadeOut("fast").load("/tk/wp-content/themes/twentyeleven/trades-brief.php").fadeIn("slow");

var refreshId = setInterval(function() {
$("#loaddiv").fadeOut("fast").load("/tk/wp-content/themes/twentyeleven/trades-brief.php").fadeIn("slow");
}, 5000);

$.ajaxSetup({ cache: false });

});

</script>

Any directions on how I could implement this would be greatly appreciated. Regards
john