title: flex 4: how to apply css to <span> in TextArea
body: <p>there is a TextArea</p>
  
  <pre><code>&lt;s:TextArea id="TextView"/&gt;
  </code></pre>
  
  <p>in script is a function where written:</p>
  
  <pre><code>TextView.textFlow = TextFlowUtil.importFromString("some &lt;span fontWeight="bold"&gt;bold&lt;/span&gt; text.");
  </code></pre>
  
  <p>it's works, but... i need something like this:</p>
  
  <pre><code>&lt;span class="test"&gt;
  </code></pre>
  
  <p>and then</p>
  
  <pre><code>&lt;fx:Style&gt;
  @namespace s "library://ns.adobe.com/flex/spark";
  
   s|TextArea span .test {
        fontWeight: bold;;
      } 
  &lt;/fx:Style&gt;
  </code></pre>
  
  <p>how to do it?  Thanks in advance!</p>