title: How to verify background (css) image was loaded?
body: <p>I have the following CSS class that I'm applying on a <code>&lt;td&gt;</code> tag:</p>
  <pre class="lang-css prettyprint-override"><code>.bg {
     background-image: url('bg.jpg');
     display: none;
  }
  </code></pre>
  <p>How can I tell with JavaScript/jQuery that the background image finished loading?</p>