codice:<slect id="film" size=1 name="film"> <option>scegli un film</otpion> <option value="gla">il gladiatore</option> <option value="ara">arancia meccanica</option> <option value="ftz">fantozzi</option> </select> <script> function verFilm() { var MySel=document.getElementById('film'); if (MySel.SelectedIndex == 0) { alert('prego selezionare un film'); return false; } return true } </script> <form ... onSubmit="return verFilm()">![]()