title: Are there any ready solutions for string(html) parsing with actionscript?
body: <p>I need to parse string entered to textarea for 2 reasons:</p>
  
  <ol>
  <li>Remove all html tags except small number that are allowed;</li>
  <li>Check if html tags are positioned correctly: <code>&lt;i&gt;&lt;b&gt; wow &lt;/i&gt;&lt;/b&gt;</code> is incorrect.</li>
  </ol>
  
  <p>Are there any 'build-in' solutions or libraries for that deal? Using regExp is not ok for this task - it's very complex and generally bad idea to parse html structure with them.</p>