'Gets <link> element styles'

def _get_external_styles(self):

    if (not self.style_string):
        self.style_string = u''
    else:
        self.style_string += u'\n'
    link_tags = self.soup.findAll('link', {'rel': 'stylesheet'})
    for tag in link_tags:
        url = tag['href']
        if url.startswith('http://'):
            pass
        elif url.startswith('/'):
            url = (self.root_url + url)
        else:
            url = (self.relative_url + url)
        self.style_string += self._get_url(url)
        tag.extract()
