{% assign url_parts = page.url | split: "/" %}
{%if page.alert %}
<div role="banner" class="banner-alert">
  <div class="container">
    {{page.alert | markdownify}}
  </div>
</div>
{%endif%}
{%if site.data.alert.message %}
<div role="banner" class="banner-alert">
  <div class="container">
    {{site.data.alert.message | markdownify}}
  </div>
</div>
{%endif%}
<div role="banner" id="top">
  <div class="container">
    <a class="logo" href="/">
      OpenSearch
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    </a>
    <div class="menu-button"><i class="icon icon-reorder"></i><span>Menu</span></div>
    <div class="nav-menu-on" role="navigation">
      <ul class="nested-nav">
        {% assign url_fragment = url_parts[1] | replace: '.html', '' %}
        {% for nav_item in site.data.top_nav.items %}
        <li>
          <a {% if nav_item.url %} href="{{ nav_item.url }}" {% endif %}
             {% if nav_item.fragments contains url_fragment or nav_item.fragment == url_fragment %} class="in-category" {% endif %}
          >{{ nav_item.label }}</a>

          {% if nav_item.children %}
          <ul>
            {% for nav_child in nav_item.children %}
            {% if nav_child.url contains '://' %}
            {% assign child_url_fragment = '#' %}
            {% else %}
            {% assign child_url_parts = nav_child.url | split: "/" %}
            {% assign child_url_fragment = child_url_parts[1] | replace: '.html', '' %}
            {% endif %}
            <li>
              <a href="{{ nav_child.url }}"
                 {% if child_url_fragment == url_fragment %} class="in-category" {% endif %}
              >{{ nav_child.label }}</a>
            </li>
            {% endfor %}
          </ul>
          {% endif %}
        </li>
        {% endfor %}
      </ul>
    </div>
  </div>
</div>