function createRequestObj(){ // creo un'istanza XMLHttpRequest
	var re;
	var browser=navigator.appName;
	if (browser=="Microsoft Internet Explorer"){ // sniff browser
		re=new ActiveXObject("Microsoft.XMLHTTP");
	} else re=new XMLHttpRequest();
	return re;
}

var http=createRequestObj();

function popolaElemento(idElDaPopolare, paginaFonteDati, metodo, parametri){ // faccio una richiesta
	// alert(parametri); // debug
	var url=paginaFonteDati+"?" + parametri
	http.open(metodo, url , true)
	document.getElementById(idElDaPopolare).innerHTML="<select class=\"select\"><option value=\"0\">caricamento in corso...</option></select>";
	http.onreadystatechange=function(){
		if (http.readyState==4 || http.readyState=="complete"){
			if (http.status == 200){
				document.getElementById(idElDaPopolare).innerHTML=http.responseText;
			} else {
				document.getElementById(idElDaPopolare).innerHTML="<select class=\"select\"><option>ERRORE "+http.status+"</option></select>";
			}
		}
	}
	http.send(null);
}


function createRequestObj2(){ // creo un'istanza XMLHttpRequest
	var re2;
	var browser2=navigator.appName;
	if (browser2=="Microsoft Internet Explorer"){ // sniff browser
		re2=new ActiveXObject("Microsoft.XMLHTTP");
	} else re2=new XMLHttpRequest();
	return re2;
}

var http2=createRequestObj2();

function popolaElemento2(idElDaPopolare2, paginaFonteDati2, metodo2, parametri2){ // faccio una richiesta
	// alert(parametri2); // debug
	var url2=paginaFonteDati2+"?" + parametri2
	http2.open(metodo2, url2 , true)
	document.getElementById(idElDaPopolare2).innerHTML="<select class=\"select\"><option value=\"0\">caricamento in corso...</option></select>";
	http2.onreadystatechange=function(){
		if (http2.readyState==4 || http2.readyState=="complete"){
			if (http2.status == 200){
				document.getElementById(idElDaPopolare2).innerHTML=http2.responseText;
			} else {
				document.getElementById(idElDaPopolare2).innerHTML="<select class=\"select\"><option>ERRORE "+http2.status+"</option></select>";
			}
		}
	}
	http2.send(null);
}