title: Re-enabling a disabled button
body: <p>If I set a button's <code>disabled</code> attribute to be <code>true</code>, and I then want to enable it after a certain period of time using jQuery, why can I not then just set the <code>disabled</code> attribute to be <code>false</code> with the jQuery?</p>
  
  <p>HTML:</p>
  
  <pre><code>&lt;form&gt;
      &lt;input id="myButton" type="submit" disabled="true" value="Submit"/&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>jQuery:</p>
  
  <pre><code>setTimeout(EnableSubmit, 3000);
  
  function EnableSubmit()
  {
      $("#myButton").attr("disabled", "false");
  }
  </code></pre>
  
  <p>JSFiddle: <a href="http://jsfiddle.net/TV7t4/" rel="nofollow">http://jsfiddle.net/TV7t4/</a></p>