(function () { var stored = ''; try { stored = sessionStorage.getItem('lk_utms') || ''; } catch (e) {} var current = window.location.search; if (current && current.indexOf('utm_') !== -1) { stored = current; try { sessionStorage.setItem('lk_utms', current); } catch (e) {} } if (!stored) return; var incoming = new URLSearchParams(stored); function decorate(a) { var u = new URL(a.href); incoming.forEach(function (v, k) { if (k.indexOf('utm_') === 0) u.searchParams.set(k, v); }); a.href = u.toString(); } function applyAll() { document.querySelectorAll('a[href*="app.lingokids.com"]').forEach(decorate); } if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', applyAll); } else { applyAll(); } document.addEventListener('click', function (e) { var a = e.target.closest && e.target.closest('a[href*="app.lingokids.com"]'); if (a) decorate(a); }, true); })();