function aprifinestra(url,w,h) {
	   posx=(screen.width/2)-(w/2+10);
	   posy=(screen.height/2)-(h/2+20);
       if (navigator.appname=='Netscape') {
 	   var win = 'scrollbars=yes,resizable=no,status=no,menubar=no,toolbar=no,location=no,width='+w+',height='+h+',screenX='+posx+',screenY='+posy+"'";
	   }
	   else {
 	   var win = 'scrollbars=yes,resizable=no,status=no,menubar=no,toolbar=no,location=no,width='+w+',height='+h+',left='+posx+',top='+posy+"'";
	   }
       window.open(url,'Area Download',win);
  }

function  chiudifinestra () {
window.close();
}