void submit_comment_default_clicked(object sender, RoutedEventArgs e)
{
if (hide_expander) // design idea
log.WriteInteractionLog(28, "Idea; Text: " + this.GetActiveTextBox().Text, ((TouchEventArgs)e).TouchDevice);
else // comment
log.WriteInteractionLog(27, "Comment; Text: " + this.GetActiveTextBox().Text + "; object_type: " + _object_type + "; object_id: " + _object_id.ToString() , ((TouchEventArgs)e).TouchDevice);
GotoAuthMode();
}