longpoll.js

<script type="application/javascript">
  $( document ).ready(function() {
    var callAgain = function(stuff){
      // Do work here
      // Why not make an ajax call and replace an element on the page?
      
      // Delay another call in 10 seconds
      setTimeout(function(){
        callAgain(stuff);
      }, 10000);
    };
    callAgain("something");
  });
</script>