private void liveBtn_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
    liveView.Visibility = Visibility.Visible;
    accountsView.Visibility = Visibility.Hidden;
}

private void accountsBtn_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
    accountsView.Visibility = Visibility.Visible;
    liveView.Visibility = Visibility.Hidden;
}