www/_includes/toc_recursive_dropdown.html

{% for entry in include.entries %}
{% if entry.url != null %}
<li>
    <a class="{% if include.my_entry == entry.url %}this-page{% endif %}" href="{{ include.path_to_root }}{{ entry.url }}">
        {{ entry.name }}
    </a>
</li>
{% endif %}
{% if entry.children %}
{% include toc_recursive_dropdown.html entries=entry.children my_entry=include.my_entry path_to_root=include.path_to_root %}
{% endif %}
{% endfor %}