document.addEventListener('click', function(e) { const button = e.target.closest('button.btn.btn-primary.align-self-center'); if (!button) { return; } const buttonText = button.innerText.trim(); if ( buttonText.includes('Pirkti bilietus') && typeof fbq === 'function' ) { fbq('track', 'InitiateCheckout', { content_name: document.title, content_type: 'ticket' }); } });