text: importScripts('../common.js');
  
  onmessage = function () {
      loadVersion();
  };
  
  function loadVersion () {
      loop(60, function () {
          var xhr = httpCall('/mon/version?ts=' + (new Date()).getTime(), '../../../');
          if (xhr.status >= 400) {
              return true;
          }
          if (xhr.status === 200) {
              postMessage(xhr.responseText);
          }
          return false;
      });
  }
  