title: Jquery Datetimepicker disable dates
body: <p>i am using jquery datetime picker for getting date and time using</p>
  
  <pre><code>$(document).ready(function() {
      $('#pickup_date').datetimepicker({
          controlType: 'select',
          timeFormat: 'hh:mm tt'           
  });
  </code></pre>
  
  <p>but i need to enable 3 weeks from the current date only.How to solve this.thanks in advance</p>