anchor.diff:              <div class="row">
                 <div class="panel-group">
                   <div class="panel panel-default">
  -                  <div class="panel-heading" data-toggle="collapse" data-target="#collapse-<?php print $host; ?>">
  +                  <div class="panel-heading" data-toggle="collapse" data-target="#collapse-<?php print html_class($host); ?>">
                       <h2 class="panel-title">
                         <?php if (($link = httpd_link_get($host)) || ($link = logs_link_get($host))): ?>
                           <a href="<?php print $link; ?>" target="_blank"><?php print $host; ?></a><span class="glyphicon glyphicon-link"></span>
  
positive.code:   return $logs_link;
  }
  
  ?>
  <!DOCTYPE html>
  
  
negative.code:                       <?php endif; ?>
                      </h2>
                    </div>
                    <div id="collapse-<?php print html_class($host); ?>" class="panel-collapse collapse">
                      <table class="table">
                        <tbody>
                          <?php foreach ($containers as $container => $links): ?>
  