title: How to make jquery use ID instead of CLASS?
body: <p>I have read that it is better performance to have jquery use a DIV's ID instead of a CLASS  This code below uses a div class instead of ID, can you make it use the ID instead?</p>
  
  <pre><code>&lt;script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"&gt;&lt;/script&gt;  
  &lt;script type="text/javascript" &gt;
   $(document).ready(function(){
    setTimeout(function(){
    $(".flash").fadeOut("slow", function () {
    $(".flash").remove();
        }); }, 2000);
   });
  &lt;/script&gt;
  &lt;div class="flash" id="flash"&gt;tessssssssssssssssssssssssssssssssssst&lt;/div&gt;
  </code></pre>