text: /**
  * @author       Richard Davey <rich@photonstorm.com>
  * @copyright    2016 Photon Storm Ltd.
  * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
  */
  
  var OS = require('../device/OS');
  
  var isBooted = false;
  
  var DOMContentLoaded = function (callback)
  {
      if (isBooted)
      {
          return;
      }
  
      if (document.readyState === 'complete' || document.readyState === 'interactive')
      {
          isBooted = true;
          
          callback();
  
          return;
      }
  
      var check = function ()
      {
          isBooted = true;
  
          document.removeEventListener('deviceready', check, true);
          document.removeEventListener('DOMContentLoaded', check, true);
          window.removeEventListener('load', check, true);
  
          callback();
      };
  
      if (!document.body)
      {
          window.setTimeout(check, 20);
      }
      else if (OS.cordova && !OS.cocoonJS)
      {
          //  Ref. http://docs.phonegap.com/en/3.5.0/cordova_events_events.md.html#deviceready
          document.addEventListener('deviceready', check, false);
      }
      else
      {
          document.addEventListener('DOMContentLoaded', check, true);
          window.addEventListener('load', check, true);
      }
  };
  
  module.exports = DOMContentLoaded;
  