title: Captcha doesn't refresh when I use jQuery's html
body: <p>I have created my own captcha and I insert this code to my page <code>&lt;span class="capch"&gt;&lt;img src="captcha.php" /&gt;&lt;/span&gt;</code>. </p>
  
  <p>Captcha.php generates a new string and stores it to $_SESSION. It's works perfectly, but when user inserts a wrong code I need to refresh this image. I do it like this: <code>$('.capch').html('&lt;img src="captcha.php" /&gt;');</code></p>
  
  <p>Why it doesn't show a new code? It really should, shouldn't? Or I am missing something here?</p>