================================
    var start_button = PUBNUB.$('start');
    PUBNUB.bind(
        'mousedown,touchstart',
        start_button,
        start_traffic
    );

    function start_traffic() {
        if (start_button.disabled) return;

        var publish_key   = PUBNUB.$('pub').value;
        var subscribe_key = PUBNUB.$('sub').value;
        var channel       = PUBNUB.$('channel').value;
        var origin        = PUBNUB.$('origin').value;
        var message       = PUBNUB.$('message');
 