title: error 406 not acceptable when i use iframe
body: <p>I am using a form action in Iframe page.(if1.php). I want to navigate to(mail.php) page which is a regular php page. (ie iframe page to another page). The code in iframe page(if1.php) for navigation is shown  below..</p>
  
  <pre><code> &lt;form target="myframe" action="mail.php" method="post"&gt;
   &lt;!-- code here --&gt;
   &lt;/form&gt;
  </code></pre>
  
  <p>But i am getting the following error when i press a submit button in iframe page(if1.php). Why is this error happening? The browser that I'm using is chrome.</p>
  
  <blockquote>
    <p>Not Acceptable An appropriate representation of the requested resource
    /radical/mail.php could not be found on this server.</p>
  </blockquote>
  
  <p>Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.</p>