function apriFinestra(url, myname, w, h, prop, res) {
 	var winl = (screen.width - w) / 2;
 	var wint = (screen.height - h) / 2;
 	winprops = "scrollbars="+prop+",height="+h+",width="+w+",top="+wint+",left="+winl+",resizable="+res+",status=yes";
	var win;
 	win = window.open(url, myname, winprops);
 if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}