title: Drupal: make a text field collapsible
body: <p>Fieldsets in Drupal are collapsible. Is there a simple way to re-cycle this kind of functionality to a text field in a content type?</p>
  
  <p>A text field is typically rendered as </p>
  
  <pre><code> &lt;div class="field field-type-text field-field-my-field"&gt;
       &lt;div class="field-label"&gt; My field Label: &lt;/div&gt;
       &lt;div class="field-items"&gt;
              ....
       &lt;/div&gt;
   &lt;/div&gt;
  </code></pre>
  
  <p>Like with a field set, how would one make the <code>field-label</code> clickable to collapse and expand the <code>field-items</code>?</p>
  
  <p>My current avenue of attack is to add the <code>collapsed</code> css class with jQuery when the page is rendered, but am wondering if this kind of thing is already available somehow in the Drupal framework.</p>