<a 
  id="navTags"
  href="{% url tags %}"
  {% if active_tab == 'tags' %}class="on"{% endif %}
>{% trans %}tags{% endtrans %}</a>
<a 
  id="navUsers"
  href="{% url users %}"
  {% if active_tab == 'users' %}class="on"{% endif %}
>{% trans %}users{% endtrans %}</a>
<a 
  id="navBadges"
  href="{% url badges %}"
  {% if active_tab == 'badges' %}class="on"{% endif %}
>{% trans %}badges{% endtrans %}</a>
