send: function(data) {
        var self = this;

        this.setupTimeoutTimer(this.timeout);

        // IE needs some time to get started...
        // TODO: verify that this is still required for IE.
        if (this.type === TYPE_XDR) {
            // Do not unwrap .send method.
            // Required to run on a separate thread.
            window.setTimeout(function () {
               self.rq.send(data);
            }, IE_SEND_TIMEOUT);
        } else {
            this.rq.send(data);
        }
    }
};