filtrer un tableau avec une liste déroulante

<div id="contnent">
<span class="title_identif"><div class="linesepar" >
<div classs="tabRleft">
<table cellspacing="2" cellpadding="3" >
					<tr>
					
						<td>Portfolio :</td>
						
						<td>
						
						<option></option>
									<?php
						include("Connection.php");
				
$query = mysql_query("SELECT * FROM Portfolio");
echo '<select>';
while ($result = mysql_fetch_assoc($query)) {
     echo '<option value="'.$result['Portfolio'].'">'.$result['Portfolio'].'</option>';
}
mysql_close($connect);
?>
	
							</select>  
						</td>
						<form method="POST">
						<td>Contract :</td>
						<td>
						<select name="Con">
						<option></option>
						<?php
						include("Connection.php");
				
$query = mysql_query("SELECT * FROM Contract");
echo '<select>';
while ($result = mysql_fetch_assoc($query)) {
     echo '<option value="'.$result['Contract'].'">'.$result['Contract'].'</option>';
}
mysql_close($connect);
?>
							
							</select> </td>
							<td> &nbsp;&nbsp;</td>
                             <td>Global status : Open &nbsp;<input type="radio" name="origine" /></td>
							 <td>Closed &nbsp;<input type="radio" name="origine" /></td>
							<td> Foreseen &nbsp;<input type="radio" name="origine" /></td>
							<td>&nbsp; &nbsp; </td>
							<td><input type="submit" value="GO"><br/></td>
							
							
							</form>
                             	<!--<td><input type="image" src="images/Go.gif" width="40" height="24" /> </td>-->		

					
					</tr>
	
				</table> </div></div> </span>
				
<div id="contnent">
<div id="rightable">
<form action="creation_update.php">
    <table id="rightbl"  cellpadding="2"   cellspacing="0">
	<tr class="th1b">

     <th class="th1">Contract</th>
	   <th class="th1">Task&nbsp;Ref</th>
	  <th class="th1">Task&nbsp;Type</th>
	   <th class="th1">Title</th>
	   <th class="th1">Description</th>
	   <th class="th1">Raised&nbsp;By</th>
	   <th class="th1">Date&nbsp;Raised</th>
	   <th class="th1">Status</th>
	   <th class="th1">Requested&nbsp;J2</th>
	   <th class="th1">Assigned&nbsp;to</th>
	   <th class="th1">PM&nbsp;costs</th>
	   <th class="th1">TQF&nbsp;costs</th>
	   <th class="th1">MEP&nbsp;costs </th>
	   <th class="th1">Total&nbsp;costs&nbsp;France</th>
	   <th class="th1">Total&nbsp;costs&nbsp;Morocco</th>
	   <th class="th1">Total&nbsp;costs</th>
	   <th class="th1">OTC&nbsp;Dir&nbsp;approval </th>
	   <th class="th1">initial&nbsp;J2 </th>
	   <th class="th1">final&nbsp;J2 </th>
	   <th class="th1">Date&nbsp;Closed </th>
	   

       </tr>
       
       <?php
       include("Connection.php");

     


$retour = mysql_query('SELECT distinct Contract, Task_Ref, 

Type , Title, Description, Raised_By, Date_Raised,Status,Requested_J2,PM_Costs,
TQF_costs,OTC_Dir_approval,Date_Closed 
FROM Contract, Task, Task_Type,Status,Task_Progress
WHERE 
Contract.Id_Contract=Task.Id_Contract and
 Task_Type.Id_Task_Type = Task.Id_Task_Type
and Status.Id_Status=Task_Progress.Id_Status



' );} 


while ($donnees = mysql_fetch_array($retour))

{
?>

<tr>
<!--<TD><INPUT TYPE=BUTTON OnClick="Circle_calc(this.form);" VALUE="calculate"></TD-->


<td><a href=""><?php echo stripslashes($donnees['Contract']); ?></a></td>
<td><?php echo stripslashes($donnees['Task_Ref']); ?></td>
<td><?php echo stripslashes($donnees['Type']); ?></td>
<td><?php echo stripslashes($donnees['Title']); ?></td>
<td><?php echo stripslashes($donnees['Description']); ?></td>
<td><?php echo stripslashes($donnees['Raised_By']); ?></td>
<td><?php echo stripslashes($donnees['Date_Raised']); ?></td>
<td><?php echo stripslashes($donnees['Status']); ?></td>
<td><?php echo stripslashes($donnees['Requested_J2']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['TQF_costs']); ?></td>
<td><?php echo stripslashes($donnees['MEP_costs']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['OTC_Dir_approval']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['']); ?></td>
<td><?php echo stripslashes($donnees['Date_Closed']); ?></td>


</tr>



<?php
} 
?>