solr/solr-ref-guide/src/_includes/topnav.html

<!-- Navigation -->
<nav class="navbar navbar-inverse navbar-fixed-top">
    <div class="container topnavlinks">
        <div class="navbar-header">
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            {% comment %} NOTE: Explicitly using *SOLR* version here (not guide){% endcomment %}
            <a class="fa fa-home fa-lg navbar-brand" href="index.html">&nbsp;<span class="projectTitle"> {{site.topnav_title}} {{ site.solr-attributes.solr-docs-version }}</span></a>
        </div>
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav navbar-right">
                <!-- Link to Solr website -->
                <li><a href="https://lucene.apache.org/solr/" target="_blank">Solr Website</a></li>
                <!-- Other Guide Formats dropdown -->
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Other Formats<b class="caret"></b></a>
                    <ul class="dropdown-menu">
                       <li><a href="https://archive.apache.org/dist/lucene/solr/ref-guide/" target="_blank">Archived PDFs</a></li>
                       <li><a href="https://lucene.apache.org/solr/guide/" target="_blank">Other Versions Online</a></li>
                    </ul>
                </li>
                <!-- Solr Resources dropdown -->
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Solr Resources<b class="caret"></b></a>
                    <ul class="dropdown-menu">
                       <li><a href="{{site.solr-attributes.solr-javadocs}}/solr-core/index.html" target="_blank">Solr Javadocs</a></li>
                       <li><a href="https://lucene.apache.org/solr/community.html#version-control" target="_blank">Lucene/Solr Source Code</a></li>
                       <li><a href="https://lucene.apache.org/solr/community.html" target="_blank">Solr Community Links</a></li>
                    </ul>
                </li>
                <!--comment out this block if you want to hide search-->
                <li>
                    <!--start search-->
                    <div id="search-demo-container">
                        <input type="text" id="search-input" placeholder="{{site.data.strings.search_placeholder_text}}">
                        <ul id="results-container"></ul>
                    </div>
                    <script src="{{ "js/jekyll-search.js"}}" type="text/javascript"></script>
                    <script type="text/javascript">
                            SimpleJekyllSearch.init({
                                searchInput: document.getElementById('search-input'),
                                resultsContainer: document.getElementById('results-container'),
                                dataSource: '{{ "search.json" }}',
                                searchResultTemplate: '<li><a href="{url}" title="{{page.title | replace: "'", "\"}}">{title}</a></li>',
                    noResultsText: '{{site.data.strings.search_no_results_text}}',
                            limit: 10,
                            fuzzy: true,
                    })
                    </script>
                    <!--end search-->
                </li>
            </ul>
        </div>
        </div>
        <!-- /.container -->
</nav>