<script LANGUAGE="JavaScript">

function browser_check()
 {
 var name = navigator.appName;
 var version = parseInt(navigator.appVersion);
 go(name, version)
 }

function go(name, version)
 {
  if(name == "Microsoft Internet Explorer" && version >=4,5,6,7)
   {
    location.href="update.html"
   }
  else
   {
    location.href="index.html"
   }
 }
</script>
