title: Show popup near user highlight
body: <p>I'm building an Chrome extension and I want to show popup/menu near the user text selection,</p>
  
  <p>I saw this question:
  <a href="https://stackoverflow.com/questions/4666367/how-do-i-position-a-div-relative-to-the-mouse-pointer-using-jquery">How do I position a div relative to the mouse pointer using jQuery?</a></p>
  
  <p>But it doesn't seems to work, or at least doesn't seems to work for extensions.</p>
  
  <p>How can I do that? </p>