function NewWindow(mypage, myname, w, h, scroll) {

    var winl = (screen.width - w) / 2;
    var wint = (screen.height - h) / 2;
    var settings = 'height=' + h + ',';
    settings += 'width=' + w + ',';
    settings += 'top=' + wint + ',';
    settings += 'left=' + winl + ',';
    settings += 'scrollbars=' + scroll + ',';
    settings += 'resizable=no';
    var win = window.open(mypage, myname, settings);
    if (parseInt(navigator.appVersion) >= 4) {
        win.window.focus();
    }

}