title: htmlPurifier not working with TinyMCE
body: <p>I´m using htmlPurifier to prevent XSS Attacks from users and everything works ok on input type="text" fields. But, when i try to clean tinyMCE textareas seems like htmlPurifier don´t work, ex.:</p>
  
  <p><strong>Simple input text field</strong></p>
  
  <p>Input.: </p>
  
  <pre><code>&lt;script&gt;alert("XSS")&lt;/script&gt;Cleaning Test
  </code></pre>
  
  <p>Output: Cleaning Test</p>
  
  <p><strong>tinyMCE TEXTAREA</strong></p>
  
  <p>Input.:</p>
  
  <pre><code>&lt;script&gt;alert("XSS")&lt;/script&gt;
  </code></pre>
  
  <p>Output: <code>&lt;script&gt;alert("XSS")&lt;/script&gt;</code></p>
  
  <p>Did i miss something ? Why htmlPurifier work on a simple input text and with tinyMCE textarea don´t ?</p>
  
  <p>Ps.: Magic Quotes are Off</p>