noweOkienko = null;
function okno(src, w, h){
var w;
 
 if(window.screen){
 aw=screen.availWidth;
 ah=screen.availHeight;
}else{
 aw=640;
 ah=450;
}

 
 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=no,"
 +"resizable=no"

noweOkienko =window.open(src, 'Mark - Brzesko', ustawienia);
noweOkienko.focus();
}