noweOkienko = null;
function noweokienko(url, w, h) {    
if(window.screen){
 aw=screen.availWidth;
 ah=screen.availHeight;
}else{
 aw=700;
 ah=550;
}
if(noweokienko==null || noweokienko.closed){
 ustawienia=
 "left=" + (aw-w)/2 + ","
 +"top=" + (ah-h)/2 + ","
 +"screenX=" + (aw-w)/2 + ","
 +"screenY=" + (ah-h)/2 + ","
 +"width=" + w + ","
 +"height=" + h + ","
 +"innerWidth=" + w + ","
 +"innerHeight=" + h + ","
 +"toolbar=no,"
 +"location=no,"
 +"directories=no,"
 +"status=no,"
 +"menubar=no,"
 +"scrollbars=yes,"
 +"resizable=yes"
}
var noweokienko = window.open(url, "noweokienko",ustawienia);
noweokienko.focus();
}