How to detect IE6, and show alert?

Question

I'm trying to show an alert when a user using IE6 uses my site. I'm thinking something like this will work:

<!--[if IE 6]>
<script language="Javascript">
alert ("The year 2004 just called - they want their browser back!")
</script>
<![endif]-->

I'd test this but I don't have a Windows box I can use ATM. Is this the correct way to do it?

Answer 1

Yes, that works:

Of course, you could use something like this, which is a bit more friendly.

Answer 2

This has already been answered but I really wanted to post something I did for this. My personal website, have configured a similar script:

  <!--[if lt IE 9]>
  <script type="text/javascript">
    location.replace("/ie/?next=/");
  </script>
  <![endif]-->

So whenever anyone with IE vesion less then 9, the browser redirects to this page.