def url(self, on, url='', css=None, **kw):
if on == 0:
self._in_mailto = False
if url.startswith('mailto:'):
self._in_mailto = True
url = url.replace('@', ' at ')
url = url.replace('.', ' dot ')
css = 'link_email'
return Formatter.url(self, on, url, css, **kw)
