The Tor Browser / file revision

 // timer has to be alive so it can't be eaten by the GC.

 var timer;

 function handleRequest(request, response)

 {

   response.setHeader("Cache-Control", "no-cache", false);

   response.setHeader("Content-Type", "text/javascript", false);

   // The "stray" open comment at the end of the write is important!

   response.write("document.write(\"<script charset='utf-8' src='script-2_bug597345.js'></script><!--\")");

   response.processAsync();

   timer = Components.classes["@mozilla.org/timer;1"]

     .createInstance(Components.interfaces.nsITimer);

   timer.initWithCallback(function() {

       response.finish();

     }, 200, Components.interfaces.nsITimer.TYPE_ONE_SHOT);

 }