title: Reveal DIV based on URL, rehide based on anchor change
body: <p>I'm currently showing and hiding a DIV based on the URL, by setting the body class name:</p>
  
  <pre><code>if(location.href.match("#!/~/product/category")){document.body.className+="show";}
  </code></pre>
  
  <p>And the DIV changes accordingly:</p>
  
  <pre><code>#showcase {
   display: none;
  }
  
  body.show  #showcase {
  display: block;
  }
  </code></pre>
  
  <p>Works great. Up until the AJAX cart changes the URL to <code>#!/~/cart</code>
  I would like to make the DIV disappear everywhere EXCEPT the <code>product/category</code> URL, but I'm stuck.</p>