function eventi(foto) {
    w = 700;
	h = 500;
	attributi = "left=" + (screen.width-w)/2 + ",top=" + (screen.height-h)/2 + ",width=" + w + ",height=" + h + ",resizable=0,scrollbars=0,toolbar=0";
	nw = window.open (foto, "Eventi", attributi);
	nw.opener = self;
}