function aleatoire(N) {
		return (Math.floor((N)*Math.random()+1));
	}

var adr_dest = ["0",
		"<iframe src='http://pub.payglad.com/form-site-de-cul/formsdc.php' framespacing='0' frameborder='no' scrolling='no' width='600' height='140' allowtransparency='true'></iframe>",
		"<iframe width='600' height='140' src='http://media.acces-charme.com/email_catcher/track.php?idw=45&idcatcher=627&format=600x140&typef=design&lg=fr&idn=1&t1=sitedecul&t2=catcher_haut&rebill=0' scrolling='no' frameborder='0' style='margin:0; padding:0' allowtransparency='true'></iframe>"];

    adr1=aleatoire(2)
    					
		document.write(adr_dest[adr1]);