title: How to disable previous dates on the TO calendar?
body: <p>This is the script I am using. What changes to be done?</p>
  
  <pre><code>$( "#from" ).datepicker
    defaultDate: "+1w",
    changeMonth: true,
    numberOfMonths: 3,
  
  $( "#to" ).datepicker
    defaultDate: "+1w",
    changeMonth: true,
    numberOfMonths: 3  
  </code></pre>