title: How do I make a pop-up that only appears after the visitor has been on the page for a certain amount of time?
body: <p>I am trying to add a non-intrusive 'Sign up to our newsletter' pop-up to a website I have been working on, but would like the pop-up to only appear after the user has been on the website for longer than 3 minutes or so. If anyone can help me achieve this that would be great.</p>
  
  <p>Thanks in advance everybody</p>