title: How to inform users that his browser is not supported
body: <p>I'm working at a small company and we are developing a web
  application. With the very few resources we have available, we can't afford
  to assemble the development team we would like to (we are only two people).
  The web app is becoming very complex over time and it is very difficult
  to keep progress with IEx, Firefox, Safari, and others. We try to be clean
  at coding so we have an almost functional web app for all non IEx modern
  browsers, but IE is another story.</p>
  
  <p>How do we inform users that IE is not supported at all and they should
  install a modern browser to continue?</p>
  
  <p>Please keep in mind that the question isn't if we should or should not
  support IE. Because we won't. The question is how to inform the users
  to change browser.</p>
  
  <p>Currently we have a small white box on top of page that displays
  some text and has some links to Firefox and Chrome. Do you
  have any ideas on how to achieve this? Anyone who has addressed this
  problem before and has some experience?</p>