code: function(cfg) {
          if (! _engine) {
              if (! YL.isString(cfg.swfURL)) {cfg.swfURL = Y.StorageEngineSWF.SWFURL;}
              if (! cfg.containerID) {
                  var bd = document.getElementsByTagName('body')[0],
                      container = bd.appendChild(document.createElement('div'));
                  cfg.containerID = YD.generateId(container);
              }
  
              if (! cfg.attributes) {cfg.attributes  = {};}
              if (! cfg.attributes.flashVars) {cfg.attributes.flashVars = {};}
              cfg.attributes.flashVars.useCompression = 'true';
              cfg.attributes.version = 9.115;
              _engine = new YAHOO.widget.SWF(cfg.containerID, cfg.swfURL, cfg.attributes);
          }
      }
docs: internal shorthand