Popup attribution from Mailchimp form

mailchimp_attribution.js

doc.find("#takeMeThere").click(function(){
    _targetWindow.nostojs(function(api){
        var cookie = api.internal.overlay.discountPopup.instance.readCookie(<POPUP_CAMPAIGN_ID>);
        if (cookie && !cookie.coupon) {
            api.internal.overlay.discountPopup.instance.writeCookie(<POPUP_CAMPAIGN_ID>, "coupon", <COUPON_CODE>);
            api.internal.couponGiven(<POPUP_CAMPAIGN_ID>, <COUPON_CODE>);
            api.customer({
              email: <EMAIL>,
              newsletter: true,
              source: 'discount-popup',
              source_id: <POPUP_CAMPAIGN_ID>
            });
        }
        _targetWindow.location = "redirect_url";
    });
});