Ho omesso la tabella che lo conteneva e il testo digitato:

<form name="form1" method="POST" action= "wineshop.php?l={LANGUAGE}&amp;page=cercavino" class="form">
<select name="regione" size="1" class="select-cartavini" onchange="form1.submit();">
<option value="0">-----</option>

{options:regioni,regione}

</select>
<input name="parola-chiave" type="text" maxlength="50" class="text-cartavini" />
<input name="cerca" type="submit" class="button-cartavini" value="Cerca" />
</form>