在网页外弹出提示层 IE only

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
 <HEAD>
  <TITLE> New Document </TITLE>
  <script>
  var pop = window.createPopup();
  function dClick()
  {
    var msg = document.getElementById('msg');
    with(pop.document.body){
      style.backgroundColor ='lightyellow';
      style.border = '1px black solid';
      innerHTML=msg.innerHTML;
    }

    pop.show(5000,5000,180,60,document.body);
  }
  </script>
 </HEAD>

 <BODY>
 <div id="msg">sdfsdfsdf</div>
  <input type="button" onclick="dClick()"/>
 </BODY>
</HTML>