title: bootstrap 3 modal window not working
body: <p>I'm using Bootstrap 3 (full version) and I use bootstrap modal in my code:</p>
  
  <pre><code>&lt;a data-toggle="modal" data-target="deleteMessage" class="btn btn-danger btn-sm"&gt;&lt;span class="glyphicon glyphicon-remove"&gt;&lt;/span&gt; Удалить&lt;/a&gt;
  
  &lt;!-- Modal --&gt;
  &lt;div id="deleteMessage" class="modal fade in" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="false"&gt;
      &lt;div class="modal-dialog"&gt;
          &lt;div class="modal-content"&gt;
              &lt;div class="modal-header"&gt;
                  &lt;button type="button" class="close" data-dismiss="modal" aria-hidden="true"&gt;&amp;times;&lt;/button&gt;
                  &lt;h4 class="modal-title"&gt;Modal title&lt;/h4&gt;
              &lt;/div&gt;
              &lt;div class="modal-body"&gt;
                  ...
              &lt;/div&gt;
              &lt;div class="modal-footer"&gt;
                  &lt;button type="button" class="btn btn-default" data-dismiss="modal"&gt;Close&lt;/button&gt;
                  &lt;button type="button" class="btn btn-primary"&gt;Save changes&lt;/button&gt;
              &lt;/div&gt;
          &lt;/div&gt;&lt;!-- /.modal-content --&gt;
      &lt;/div&gt;&lt;!-- /.modal-dialog --&gt;
  &lt;/div&gt;&lt;!-- /.modal --&gt;
  </code></pre>
  
  <p>This code I copied from official docs, but it's not working, modal window does not display. </p>
  
  <p>Whats the problem?</p>
  
  <p>Many thanks.</p>