Generic Browser Warning

gistfile1.js

<script type="text/javascript"> 
  var $buoop = {
    vs:{i:9},
    //test: true, //use for testing
    text: "<b>Warning:</b> Your internet browser is not supported by this web application and some features may not work correctly. Please consider upgrading to the latest version of Internet Explorer, Firefox, or Chrome."}; 
    $buoop.ol = window.onload; 
    window.onload=function(){ 
     try {if ($buoop.ol) $buoop.ol();}catch (e) {} 
     var e = document.createElement("script"); 
     e.setAttribute("type", "text/javascript"); 
     e.setAttribute("src", "//browser-update.org/update.js"); 
     document.body.appendChild(e); 
  } 
</script>