function popImg(url){
	var ww=560;
	var wh=460;
	var x=(screen.width/2)-(ww/2);
	var y=(screen.height/2)-(wh/2);
	var f=window.open(url, 'Immagine', 'left='+x+',top='+y+',width='+ww+',height='+wh+',directories=no,toolbar=no,location=no,scrollbars=auto,resizable=yes,menubar=no,status=no');
	f.focus();
}