var win = null;
function pencereac(mypage, myname, w, h, pos, infocus) {
    if (pos == "random") { myleft = (screen.width) ? Math.floor(Math.random() * (screen.width - w)) : 100; mytop = (screen.height) ? Math.floor(Math.random() * ((screen.height - h) - 75)) : 100; }
    if (pos == "center") { myleft = (screen.width) ? (screen.width - w) / 2 : 100; mytop = (screen.height) ? (screen.height - h) / 2 : 100; }
    else if ((pos != 'center' && pos != "random") || pos == null) { myleft = 0; mytop = 20 }
    settings = "width=" + w + ",height=" + h + ",top=" + mytop + ",left=" + myleft + ",scrollbars=yes,location=no,directories=no,status=no,width=900,height=600,menubar=no,toolbar=no,resizable=no"; win = window.open(mypage, myname, settings);
    win.focus();
}
// -->