title: how to applique a mask on an Alertify.js prompt
body: <p>Is there a way to applique a mask on a <code>Alertify.js</code> prompt ?</p>
  
  <p>I need to add on a <code>jquery mask</code>a like this : </p>
  
  <pre><code>$('document').ready(function(){
    $('.car_number').mask('(SSS-0000');
    });
  </code></pre>
  
  <p>On an <code>alertify.js</code> prompt like this :</p>
  
  <pre><code>alertify.prompt( 'test', 'Insert a car number', '', function(evt, value) {
                 if(value) {
                     getVal(value);
                     }
                  }
                 , function() {})
  }
  </code></pre>
  
  <p>to get an output like :</p>
  
  <pre><code>PCT-5077
  </code></pre>
  
  <p>Any help is welcome.</p>