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>