function createRequestObject() {
	var ro;
	var browser = navigator.appName;
	if(browser == "Microsoft Internet Explorer"){
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}else{
		ro = new XMLHttpRequest();
	}
	return ro;
}

var http = createRequestObject();

function handleResponse() {
	if(http.readyState == 4){
		var response = http.responseText;
		//alert (response);
		var update = new Array();
		if(response.indexOf('|' != -1)) {
			update = response.split('|');
			document.getElementById(update[0]).innerHTML = update[1];
		}
	}
}

function handleResponse1() {
	if(http.readyState == 4) {
		var response = http.responseText;
		alert (utf8_decode(response));
		/*
		var update = new Array();
		if(response.indexOf('|' != -1)) {
			update = response.split('|');
			alert(''+update[1]);
		}
		*/
	}
}
function utf8_decode ( str_data ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Webtoolkit.info (http://www.webtoolkit.info/)
    // +      input by: Aman Gupta
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // *     example 1: utf8_decode('Kevin van Zonneveld');
    // *     returns 1: 'Kevin van Zonneveld'
 
    var tmp_arr = [], i = ac = c = c1 = c2 = 0;
 
    while ( i < str_data.length ) {
        c = str_data.charCodeAt(i);
        if (c < 128) {
            tmp_arr[ac++] = String.fromCharCode(c); 
            i++;
        } else if ((c > 191) && (c < 224)) {
            c2 = str_data.charCodeAt(i+1);
            tmp_arr[ac++] = String.fromCharCode(((c & 31) << 6) | (c2 & 63));
            i += 2;
        } else {
            c2 = str_data.charCodeAt(i+1);
            c3 = str_data.charCodeAt(i+2);
            tmp_arr[ac++] = String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i += 3;
        }
    }
    
    return tmp_arr.join('');
}
// **************


function selectProvince(codRegione){
	http.open('get', '/ajax/select_province.php?cod_regione='+codRegione);
	http.onreadystatechange = handleResponse;
	http.send(null);
	setTimeout("selectComuni(0);",500);
	setTimeout("selectZone(0);",1000);
}
function selectComuni(codProvincia){
	http.open('get', '/ajax/select_comuni.php?cod_provincia='+codProvincia);
	http.onreadystatechange = handleResponse;
	http.send(null);
	setTimeout("selectZone(0);",500);
}
function selectZone(codComune){
	http.open('get', '/ajax/select_zone.php?cod_comune='+codComune);
	http.onreadystatechange = handleResponse;
	http.send(null);
}

// cantieri edili

function CEselectComuni(codProvincia){
	http.open('get', '/ajax/CE_select_comuni.php?cod_provincia='+codProvincia);
	http.onreadystatechange = handleResponse;
	http.send(null);
	setTimeout("CEselectZone(0);",500);
}
function CEselectZone(codComune){
	http.open('get', '/ajax/CE_select_zone.php?cod_comune='+codComune);
	http.onreadystatechange = handleResponse;
	http.send(null);
}