title: Confirmation box before submitting
body: <p>I have this form, which i need to modify in order to confirm it before submission.</p>
  
  <pre><code> echo '&lt;form method="post" action="coupon.php"&gt;
  &lt;input type="hidden" name="id_user"
   value="'.$id_user.'"&gt;
   &lt;input type="hidden" name="points"
   value="250"&gt;
   &lt;input type="hidden" name="form_secret" id="form_secret" value="'.$_SESSION['FORM_SECRET'].'" /&gt;
    &lt;div id="p2"&gt;
  &lt;input type="submit" value="250"&gt;&lt;/div&gt;
  &lt;/form&gt;';
  </code></pre>
  
  <p>I tried to implement many jquery modal boxes (i don't need plain javascript because i need to add some design) but the form even if there was a popup continued to process.
  Can you suggest me something?
  Thanks.</p>