title: Update $_SESSION[balance] automatically?
body: <p>I get the value of <code>$_SESSION[balance]</code> from a MySQL database on every login. How can I update the value in clients browser without reloading the page every 5 minutes? I think it can possibly be done using AJAX?</p>
  
  <p>Sorry if that's too vague I'm absolutely clueless as to where to start on this.</p>