function OpenTennisTicker(param, ticker) {
    var width = 640;
    var height = 614;

    var leftMarg = (screen.availWidth - width) / 2;
    var topMarg = (screen.availHeight - height) / 2;

    var ttURL = "http://www.tennisscores.de/livescore/" + ticker + "/livescorer.html?" + param;
    window.open(ttURL, "_blank", 'top=' + topMarg + ',left=' + leftMarg +
',menubar=0,toolbar=0,location=0,directories=0,status=0,scrollbars=0, width=' + width + ', height=' + height);
}