Linked select with all the Italian provinces and town

Hello.
In this section, I’d want to propose a javascript script indispensable for registration form and locality research. It works in the following mode.
Two linked select, the first select contains all the Italian provinces (list update at 2007).
For every province selected in the first select, the second select shows every and only town presents in the selected province.
This script is complete.
Who was interested can visit the following site:
www.italian-town.com