codice:
<HTML>
<HEAD>
<script language="javascript">
function objProvincia(codice,nome){
this.codice=codice
this.nome=nome
}
function objRegione(nome,province){
this.nome = nome
this.province = province
}
var regioni = new Array()
province = new Array()
province[province.length]=new objProvincia('CH','CHIETI')
province[province.length]=new objProvincia('AQ','L\'AQUILA')
province[province.length]=new objProvincia('PE','PESCARA')
province[province.length]=new objProvincia('TE','TERAMO')
regioni[regioni.length]=new objRegione('ABRUZZO',province)
province = new Array()
province[province.length]=new objProvincia('MT','MATERA')
province[province.length]=new objProvincia('PZ','POTENZA')
regioni[regioni.length]=new objRegione('BASILICATA',province)
province = new Array()
province[province.length]=new objProvincia('CZ','CATANZARO')
province[province.length]=new objProvincia('CS','COSENZA')
province[province.length]=new objProvincia('KR','CROTONE')
province[province.length]=new objProvincia('RC','REGGIO DI CALABRIA')
province[province.length]=new objProvincia('VV','VIBO VALENTIA')
regioni[regioni.length]=new objRegione('CALABRIA',province)
province = new Array()
province[province.length]=new objProvincia('AV','AVELLINO')
province[province.length]=new objProvincia('BN','BENEVENTO')
province[province.length]=new objProvincia('CE','CASERTA')
province[province.length]=new objProvincia('NA','NAPOLI')
province[province.length]=new objProvincia('SA','SALERNO')
regioni[regioni.length]=new objRegione('CAMPANIA',province)
province = new Array()
province[province.length]=new objProvincia('BO','BOLOGNA')
province[province.length]=new objProvincia('FE','FERRARA')
province[province.length]=new objProvincia('FO','FORLI\'')
province[province.length]=new objProvincia('MO','MODENA')
province[province.length]=new objProvincia('PR','PARMA')
province[province.length]=new objProvincia('PC','PIACENZA')
province[province.length]=new objProvincia('RA','RAVENNA')
province[province.length]=new objProvincia('RE','REGGIO NELL\'EMILIA')
province[province.length]=new objProvincia('RS','REPUBBLICA DI SAN MARINO')
province[province.length]=new objProvincia('RN','RIMINI')
regioni[regioni.length]=new objRegione('EMILIA-ROMAGNA',province)
province = new Array()
province[province.length]=new objProvincia('GO','GORIZIA')
province[province.length]=new objProvincia('PN','PORDENONE')
province[province.length]=new objProvincia('TS','TRIESTE')
province[province.length]=new objProvincia('UD','UDINE')
regioni[regioni.length]=new objRegione('FRIULI-VENEZIA GIULIA',province)
province = new Array()
province[province.length]=new objProvincia('CV','CITTA DEL VATICANO')
province[province.length]=new objProvincia('FR','FROSINONE')
province[province.length]=new objProvincia('LT','LATINA')
province[province.length]=new objProvincia('RI','RIETI')
province[province.length]=new objProvincia('RM','ROMA')
province[province.length]=new objProvincia('VT','VITERBO')
regioni[regioni.length]=new objRegione('LAZIO',province)
province = new Array()
province[province.length]=new objProvincia('GE','GENOVA')
province[province.length]=new objProvincia('IM','IMPERIA')
province[province.length]=new objProvincia('SP','LA SPEZIA')
province[province.length]=new objProvincia('SV','SAVONA')
regioni[regioni.length]=new objRegione('LIGURIA',province)
province = new Array()
province[province.length]=new objProvincia('BG','BERGAMO')
province[province.length]=new objProvincia('BS','BRESCIA')
province[province.length]=new objProvincia('CO','COMO')
province[province.length]=new objProvincia('CR','CREMONA')
province[province.length]=new objProvincia('LC','LECCO')
province[province.length]=new objProvincia('LO','LODI')
province[province.length]=new objProvincia('MN','MANTOVA')
province[province.length]=new objProvincia('MI','MILANO')
province[province.length]=new objProvincia('PV','PAVIA')
province[province.length]=new objProvincia('SO','SONDRIO')
province[province.length]=new objProvincia('VA','VARESE')
regioni[regioni.length]=new objRegione('LOMBARDIA',province)
province = new Array()
province[province.length]=new objProvincia('AN','ANCONA')
province[province.length]=new objProvincia('AP','ASCOLI PICENO')
province[province.length]=new objProvincia('MC','MACERATA')
province[province.length]=new objProvincia('PS','PESARO E URBINO')
regioni[regioni.length]=new objRegione('MARCHE',province)
province = new Array()
province[province.length]=new objProvincia('CB','CAMPOBASSO')
province[province.length]=new objProvincia('IS','ISERNIA')
regioni[regioni.length]=new objRegione('MOLISE',province)
province = new Array()
province[province.length]=new objProvincia('AL','ALESSANDRIA')
province[province.length]=new objProvincia('AT','ASTI')
province[province.length]=new objProvincia('BI','BIELLA')
province[province.length]=new objProvincia('CN','CUNEO')
province[province.length]=new objProvincia('NO','NOVARA')
province[province.length]=new objProvincia('TO','TORINO')
province[province.length]=new objProvincia('VB','VERBANIA-CUSIO-OSSOLA')
province[province.length]=new objProvincia('VC','VERCELLI')
regioni[regioni.length]=new objRegione('PIEMONTE',province)
province = new Array()
province[province.length]=new objProvincia('BA','BARI')
province[province.length]=new objProvincia('BR','BRINDISI')
province[province.length]=new objProvincia('FG','FOGGIA')
province[province.length]=new objProvincia('LE','LECCE')
province[province.length]=new objProvincia('TA','TARANTO')
regioni[regioni.length]=new objRegione('PUGLIA',province)
province = new Array()
province[province.length]=new objProvincia('CA','CAGLIARI')
province[province.length]=new objProvincia('NU','NUORO')
province[province.length]=new objProvincia('OR','ORISTANO')
province[province.length]=new objProvincia('SS','SASSARI')
regioni[regioni.length]=new objRegione('SARDEGNA',province)
province = new Array()
province[province.length]=new objProvincia('AG','AGRIGENTO')
province[province.length]=new objProvincia('CL','CALTANISSETTA')
province[province.length]=new objProvincia('CT','CATANIA')
province[province.length]=new objProvincia('EN','ENNA')
province[province.length]=new objProvincia('ME','MESSINA')
province[province.length]=new objProvincia('PA','PALERMO')
province[province.length]=new objProvincia('RG','RAGUSA')
province[province.length]=new objProvincia('SR','SIRACUSA')
province[province.length]=new objProvincia('TP','TRAPANI')
regioni[regioni.length]=new objRegione('SICILIA',province)
province = new Array()
province[province.length]=new objProvincia('AR','AREZZO')
province[province.length]=new objProvincia('FI','FIRENZE')
province[province.length]=new objProvincia('GR','GROSSETO')
province[province.length]=new objProvincia('LI','LIVORNO')
province[province.length]=new objProvincia('LU','LUCCA')
province[province.length]=new objProvincia('MS','MASSA-CARRARA')
province[province.length]=new objProvincia('PI','PISA')
province[province.length]=new objProvincia('PT','PISTOIA')
province[province.length]=new objProvincia('PO','PRATO')
province[province.length]=new objProvincia('SI','SIENA')
regioni[regioni.length]=new objRegione('TOSCANA',province)
province = new Array()
province[province.length]=new objProvincia('BZ','BOLZANO')
province[province.length]=new objProvincia('TN','TRENTO')
regioni[regioni.length]=new objRegione('TRENTINO-ALTO ADIGE',province)
province = new Array()
province[province.length]=new objProvincia('PG','PERUGIA')
province[province.length]=new objProvincia('TR','TERNI')
regioni[regioni.length]=new objRegione('UMBRIA',province)
province = new Array()
province[province.length]=new objProvincia('AO','AOSTA')
regioni[regioni.length]=new objRegione('VALLE D\'AOSTA',province)
province = new Array()
province[province.length]=new objProvincia('BL','BELLUNO')
province[province.length]=new objProvincia('PD','PADOVA')
province[province.length]=new objProvincia('RO','ROVIGO')
province[province.length]=new objProvincia('TV','TREVISO')
province[province.length]=new objProvincia('VE','VENEZIA')
province[province.length]=new objProvincia('VR','VERONA')
province[province.length]=new objProvincia('VI','VICENZA')
regioni[regioni.length]=new objRegione('VENETO',province)
function creaRegioni(){
oo = document.NomeForm.regione.options
for(i=0;i<regioni.length;i++)
oo[oo.length]=new Option(regioni[i].nome,regioni[i].nome)
}
function svuotaOption(oo){
for(i=(oo.length-1);i>=0;i--)
oo[i]=null
}
function filtraProvince(reg){
oo = document.NomeForm.provincia.options
svuotaOption(oo)
if(reg=='')oo[oo.length]=new Option('Selezionare la Regione','')
else{
for(i=0;i<regioni.length;i++)
if(regioni[i].nome==reg){
pro = regioni[i].province
for(j=0;j<pro.length;j++)
oo[oo.length]=new Option(pro[j].nome,pro[j].codice)
i=regioni.length
}
}
}
function vai(ff){
pro = ff.provincia.options[ff.provincia.selectedIndex].value
if(pro!='')
alert(pro)
}
</script>
</HEAD>
<BODY onload="creaRegioni()">
<form name="NomeForm">
<select name="regione" onchange="filtraProvince(this.options[this.selectedIndex].value)">
<option value="">Selezionare...</option>
<option value="">---------------</option>
</select>
<select name="provincia">
<option value="">Selezionare la Regione</option>
</select>
<input type="button" value="vai" onclick="vai(this.form)">
</form>
</BODY>
</HTML>