docs: function (event) {
              // This method cannot use 'this' because the scope is not aria.core.transport.IFrame when this method is
              // called. It uses oSelf instead.
              var event = event || Aria.$frameworkWindow.event;
              var iFrame = event.target || event.srcElement;
              if (!iFrame.readyState || /loaded|complete/.test(iFrame.readyState)) {
                  var reqId = /^xIFrame(\d+)$/.exec(iFrame.id)[1];
                  // Make sure things are async
                  setTimeout(function () {
                      aria.core.transport.IFrame._sendBackResult(reqId);
                  }, 4);
              }
          }