function Pcent(w,h,url,n,id) {
   var l = Math.floor((screen.width-w)/2);
   var t = Math.floor((screen.height-h)/2);
      window.open(url,"","width=" + w + ",height=" + h + ",top=" + t + ",left=" + l+",scrollbars=yes");
 }
function apriUrl(url) {
	if (url!=null) {
		win=window.open(url,'finestra',"width=800,height=480,toolbar=yes,left=50,top=100,resizable=yes,location=yes,menubar=yes,scrollbars=yes");
	}
}