code: function(type, attr, win) {
          var w = win || Y.config.win, d=w.document, n=d.createElement(type),
              i;
  
          for (i in attr) {
              if (attr[i] && attr.hasOwnProperty(i)) {
                  n.setAttribute(i, attr[i]);
              }
          }
  
          return n;
      }
docs: hash of queues to manage multiple requests
  @property queues
  @private