the most simple way is like it:
<script language=javscript>
function SubmitForm() {
document.yourform.submit();
}
</script>
<form method="POST" action="testdb.php3" name="yourform">
<p><select size="1" name="rechref" onchange="JavaScript:SubmitForm()">
<option selected value="%">Liste Triée sur REF.</option>
<option value="%BOX%">Boitiers</option>
<option value="%MB%">Cartes Mères</option>
<option value="%GC%">Cartes Graphiques</option>
[...]
<option value="%SOF%">Software</option>
</select></p>
Fernando Figueiredo Torres
Belo Horizonte, MG, Brazil