var regionJS = document.getElementById("RegionJS");
var arrRegions = new Array();
arrRegions = new Array('Abruzzo', '1', 'Basilicata', '2', 'Calabria', '3', 'Campania', '4', 'Emilia Romagna', '5', 'Friuli - Venezia Giulia', '6', 'Lazio', '7', 'Liguria', '8', 'Lombardia', '9', 'Marche', '10', 'Molise', '11', 'Piemonte', '12', 'Puglia', '13', 'Sardegna', '14', 'Sicilia', '15', 'Toscana', '16', 'Trentino - Alto Adige', '17', 'Umbria', '18', 'Valle d\'Aosta', '19', 'Veneto', '20');
var position = 1;
for (i = 0; i < arrRegions.length; i += 2) {
    regionJS.options[position] = new Option(arrRegions[i], arrRegions[i + 1]);
    if (ID_Region == arrRegions[i + 1]) {
        regionJS.options[position].selected = true;    
    }
    position++;
}