<form name="form">
<select name="menu" onchange="document.getElementById('contenuto').src =this.options[this.selectedIndex].value;">
<option>-------------------------------</option>
<option value="abruzzo.htm">Abruzzo</option>
<option value="puglia.htm">Puglia</option>
<option value="sicilia.htm">Sicilia</option>
<option value="umbria.htm">Lazio</option>
<option value="calabria.htm">Calabria</option>
<option value="campania.htm">Campania</option>
<option value="lombardia.htm">Lombardia</option>
</select>
</form>




nulla... non funziona.