function afficarte(page) {
	var wwidth = 790;
	var wheight = 590;
	var lpos = 0;
	var tpos = 0;
	if (screen.width > wwidth){ lpos = (screen.width-wwidth)/2; }
	if (screen.height > wheight){ tpos = (screen.height-wheight)/2; }
	fenetreImg = window.open(page, '_blank','menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=yes,copyhistory=no,width=' + wwidth  + ',height=' + wheight + ',left=' + lpos + ',top=' + tpos); 
	fenetreImg.focus();
}