title: how to disable a button for 30 seconds
body: <p>I want to disable a button for 30 seconds after the page is loaded (to prevent multiple clicking without even a try to watch the content). How can I do that?</p>
  
  <pre><code>&lt;input class="button vote" type="submit" onClick="javascript: vote();" value="Vote for this story" /&gt;
  </code></pre>