codice:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Documento senza titolo</title>
</head>
<frameset rows="150,*">
<frame src="superiore.html" name="Framesuperiore" scrolling="AUTO" noresize>
<frameset cols="25%,*">
<frame src="sinistro.html" name="Framesinistro">
<frame src="centrale.html" name="FramePrincipale">
</frameset>
</frameset>
<noframes>
<body>
</body>
</noframes>
</html>