title: How to reload a div using render(:update) and replace_html?
body: <p>How to reload only the div id on a page?
  I just need to reload a certain div.</p>
  
  <p>in my controller I have</p>
  
  <pre><code>def mycontrolleraction
   ...
  
   render(:update) do |page|
     reload_only_the_div('adiv'), :controller =&gt; 'my_controller'
   end
  
  end
  </code></pre>
  
  <p>Is this possible?</p>