document.onreadystatechange = function() {
            if (document.readyState === 'complete') {
                var contactId = document.querySelector('#contactId').value || 0;
                var event = {
                    eventName: 'inf-website-trigger-contact-event',
                    contactId: contactId
                };

                window.parent.postMessage(JSON.stringify(event), '*');
            }
        };