private void TrackerForm_VisibleChanged(object sender, EventArgs e)
{
if (!Visible)
{
timer.Stop();
timerSecondsPlayed.Stop();
httpClientService.CancelPendingRequests();
initialLoading = true;
webBrowser.Document.MouseDown -= new HtmlElementEventHandler(TrackerForm_MouseDown);
webBrowser.Document.MouseMove -= new HtmlElementEventHandler(TrackerForm_MouseMove);
}
}