{% macro prev_next(prev_label=_("newer"), next_label=_("older")) %}
    <nav class="prev_next_links">
        <ul>
            {% if newer_url is defined %}
                <li class="newer_items">
                    <a href="{{newer_url}}">
                        <img src="{{media_path}}icons/tango/actions/32/go-previous.png">
                        {{prev_label}}
                    </a>
                </li>
            {% endif %}
            {% if older_url is defined %}
                <li class="older_items">
                    <a href="{{older_url}}">
                        <img src="{{media_path}}icons/tango/actions/32/go-next.png">
                        {{next_label}}
                    </a>
                </li>
            {% endif %}
        </ul>
    </nav>
{% endmacro %}