def _footer_start_thread(self, text, time):
        """Display given text in the footer. Clears after <time> seconds

        """
        footerwid = urwid.AttrMap(urwid.Text(text), 'footer')
        self.top.footer = footerwid
        load_thread = Thread(target=self._loading_thread, args=(time,))
        load_thread.daemon = True
        load_thread.start()
Display given text in the footer. Clears after <time> seconds