title: Jquery accordion plugin
body: <p>I am use Jquery accordion plugin.
  I need to use my own header icons,
  according to doc, i need to create css class with background image.</p>
  
  <p>so i did this in my css file.</p>
  
  <pre><code>.normal_arrow {
      background : url(../images/arrowonly.jpg);
  }
  
  .circle_arrow {
      background : url(../images/circle_arrow.jpg);
  }
  
  .circle_arrow_down {
      background : url(../images/circle_arrow_down.jpg);
  }
  </code></pre>
  
  <p>then in javascript:</p>
  
  <pre><code>$("#accordion").accordion({
      header: "h3",
      clearStyle: true,
      autoHeight: false,
      icons: {
          header: "normal_arrow",
          headerSelected: "circle_arrow_down"               
      }
  });
  </code></pre>
  
  <p>but there is no arrows showed up.</p>