The form

<? if ($_POST['categorie'] != null) { if ($_SESSION['langue'] == 'en') { $requete = mysql_query("SELECT * FROM categories WHERE categorie_en ='".$_POST['categorie']."'"); }if ($_SESSION['langue'] == 'fr') { $requete = mysql_query("SELECT * FROM categories WHERE categorie_fr ='".$_POST['categorie']."'"); }$donnees = mysql_fetch_assoc($requete);$_SESSION['souscategorie'] = $donnees['id'];} ?><form method="post" action="" name="categorie_frm"><table cellpadding="0" cellspacing="0" bgcolor="#223F7B"><tr><td style="font-size:16px; color:#ffffff;" align="center"><strong><? echo $txt33; ?></strong></td></tr><tr><td><hr style="height: '2'; text-align: 'left'; color: 'ffffff'; width: '100%'"></td></tr><?$retour = mysql_query('SELECT * FROM categories');while ($donnees = mysql_fetch_array($retour))	{  				if ($_SESSION['langue'] == 'fr') { $categorie = $donnees['categorie_fr']; }		if ($_SESSION['langue'] == 'en') { $categorie = $donnees['categorie_en']; }				if ($_SESSION['souscategorie'] != $donnees['id']) { ?>        <tr><td>		<input name="categorie" value="<? echo htmlentities($categorie); ?>" type="submit" style="cursor:pointer; width:150px; text-align:left; background-color : #223F7B; color: #F3D82F; font-size:14px; border:0;" /></td></tr>     <? }		else { ?>                                           <tr><td><strong><input name="categorie" value="<? echo htmlentities($categorie); ?>" type="submit" style="cursor:pointer; width:150px; text-align:left; background-color: #223F7B; color: #F3D82F; font-size:16px; border:0;"></strong></td></tr>        <? 							$retour_souscat = mysql_query('SELECT * FROM souscategories WHERE categorie_id='.$donnees['id']);							while ($donnees_souscat = mysql_fetch_array($retour_souscat))								{  									if ($_SESSION['langue'] == 'fr') { $souscat = $donnees_souscat['souscat_fr']; }									if ($_SESSION['langue'] == 'en') { $souscat = $donnees_souscat['souscat_en']; }				           			?>        <tr><td>       &nbsp;&nbsp;<a href="site.php?cmd=souscategorie&amp;id=<? echo $donnees_souscat['souscat_fr']; ?>" style="width:150px; text-align:left; background-color: #223F7B; color: #F3D82F; font-size:12px; border:0;"><? echo $souscat; ?></a></td></tr>        <?	} ?>        <?	 } ?><? 	} ?><tr><td><hr style="height: '2'; text-align: 'left'; color: 'ffffff'; width: '100%'"></td></tr><tr><td>&nbsp;</td></tr></table><br /></form>