I have a popup that contain 2 buttons on of them is for closing this popup ! how can I modify my code to get what I want  ?

2. <a href="#popupLogin" data-rel="popup" data-position-to="window" data-role="button"  data-icon="check" data-theme="b" data-transition="pop" >Envoyer</a>
3. <div data-role="popup" id="popupMenu" data-theme="c">
4.     <div data-role="popup" id="popupLogin" data-theme="b" class="ui-corner-all">
5.        
6.             <div style="padding:10px 20px;">
7.               <h3>Pour confirmer ce transfert, veuillez entrer votre code PIN : </h3>
8.    <input type="text" name="CodePIN" />
9.  
10.               <button type="submit" data-theme="e" data-icon="check">OK</button>
11.  <button type="submit" data-theme="d" data-icon="delete">Cancel</button>
12.             </div>
13.     
14.     </div>
15. </div>