title: flex mobile validation: how to remove red error border?
body: <p>I use validators in my flex mobile application.
  I want  to remove the red border when validator has triggered an error.</p>
  
  <pre><code>    &lt;mx:EmailValidator id="emailV"  source="{login_txt}" property="text"  triggerEvent="click" trigger="{connexion_btn}"  /&gt;
      &lt;mx:StringValidator id="passwordV" source="{password_txt}" property="text"  trigger="{connexion_btn}"  triggerEvent="click" /&gt;
  </code></pre>
  
  <p>I tried: </p>
  
  <pre><code>target.errorString = null; // not good
  </code></pre>
  
  <p>Any clue ?</p>