title: IE6 background appears-disappears on scrolling
body: <p>Given IE6, an UL-LI list and a background image for the UL container.</p>
  
  <pre><code>&lt;style&gt;
    ul {background-image: url(images/bgr.png);}
  &lt;/style&gt;
  ...
  &lt;ul&gt;
    &lt;li&gt;...&lt;/li&gt;
    ...
  &lt;/ul&gt;
  </code></pre>
  
  <p>When I load the page, the background is randomly loaded, some parts are visible, some are not. Moreover, it changes on runtime when I'm scrolling on the page. When I scroll out the UL list and scroll back, different parts of the background will be visible, depends on the speed of scrolling.
  Do you have any idea? Thanks in advance.</p>