<table border="1">
		<tr>
		<th>Professionnels</th>
		<th></th>
		<th>Contenu de ma liste</th>
		</tr>
		<tr>
		<td align="left">
		<select multiple="multiple[]" size="20" name="noms"> 

		<?php $te = $bdd->query('SELECT matricule, nom, prenom FROM collaborateur ORDER BY nom ASC');
		while($p = $te->fetch())
		{
			$mat = $p['matricule'];
			$nom = $p['nom'];
			$prenom = $p['prenom'];
			echo "<option value = '$mat'>$nom $prenom</option>";
		} ?> 

		</select>
		</td>
		<td style="width: 45px;"><input name="but" type="button" style="width: 35px;" value=">>" /><br /><br /><input name="butt" type="button" style="width: 35px;" value=">" /><br /><br /><br />
		<input name="butto" type="button" style="width: 35px;" value="<<" /><br /><br /><input name="button" type="button" style="width: 35px;" value="<" /></td>
		<td align="left">
		<select multiple="multipl" size="20" name="sel">
		</select>
		</td>
		</tr>
		</table>

<select multiple = 'multiple' size = '5' name = 'noms'>
<option value ='1'>Le Petit Nicolas</option>
<option value ='2'>Le grand charles</option>
<option value = '3'>Le nain</option>
</select>

select multiple = 'multiple' size = '5' name = 'noms'>
<option>Le Petit Nicolas</option>
<option>Le grand charles</option>
<option'>Le nain</option>
</select>

$selecteur = "<select multiple = 'multiple' size = '5' name = 'noms'>";
$res = mysql_query ("select nom, id from base");
while ($ligne = mysql_fetch_array($res, MYSQL_ASSOC)) 
{
       $id = $ligne['id'];
       $nom = $ligne ['nom'];
       $selecteur .= "<option value ='$id'>$nom</option>";
   }
$selecteur .= "</select>";