<script language="javascript" type="text/javascript">

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

    </script>