<SCRIPT LANGUAGE="JavaScript">
function verFilm()
{
var MySel=document.getElementById('film');
if (MySel.SelectedIndex == 0)
{
alert('Selezionare un film');
return false;
}
return true
}
</SCRIPT>
......
......
......
<form method="post" action="visualizza_film.php" onSubmit="function verFilm();">
Ricerca avanzata per film:</p>
<select id="film" name="film">
<option>Scegli un film...</option>
<?php
while ($row = mysql_fetch_array($results)) {
echo "<option value=\"" . $row['title'] . "\">" . $row['title'] . "</option>";
}
?>
<input type="submit" value="Cerca">
</select>
</form>