title: popup once every 5 minute
body: <p>i have a bootstrap modal popup with following code that runs every time page loads. 
  I need the script run once for each session with cookie and cookie will expire after 5 minutes. can you please help?</p>
  
  <p>here's the code:</p>
  
  <pre><code>$(window).on('load',function(){
      $('#myModal').modal('show');
  });
  </code></pre>