codice:
<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Documento HTML</title>
<script type="text/javascript">
var finestrella;

function riempi () {
 		finestrella = open("", "Dati-inviati", "width=800,height=600");
		finestrella.document.open();
		finestrella.document.write("<!doctype html>\n<html>\n<head>\n<meta http-equiv=\"Content-Type\" content=\"text\/html; charset=UTF-8\" \/>\n<title>Documento HTML<\/title>\n<\/head>\n \n<body>");
		finestrella.document.write("<h1>Ecco i dati inviati dall'utente</h1>");
		finestrella.document.write("

NOME: "+nome+"<br \/>");
		finestrella.document.write("VIA: "+via+"<br \/>");
		finestrella.document.write("NUMERO: "+numero+"<br \/>");
		finestrella.document.write("CAP: "+cap+"<br \/>");
		finestrella.document.write("EMAIL: "+email+"<br \/>");
		finestrella.document.write("PASSWORD: "+password+"<\/p>");
		finestrella.document.write("<\/body><\/html>");
		finestrella.document.close();
}

function cancella () {
	finestrella.document.body.innerHTML = "";
}
</script>
</head>
 
<body>

[ <span style="color: #0000ff; text-decoration: underline; cursor: pointer;" onclick="riempi();">Apri</span>
| <span style="color: #0000ff; text-decoration: underline; cursor: pointer;" onclick="cancella();">Svuota</span> ]

</body>
</html>