(function () {
// Prevent browser from restoring a scrolled position automatically.
if (‘scrollRestoration’ in history) history.scrollRestoration = ‘manual’;
// If some links still have #t4b-continue in href, strip it on click and add ?go=1 instead.
const billing = sessionStorage.getItem(‘t4b-billing’) || ‘monthly’;
document.addEventListener(‘click’, function (e) {
const btn = e.target.closest(‘.t4b-btn’);
if (!btn) return;
// Work out the correct package URL (respects monthly/yearly buttons)
const raw =
(btn.dataset && (btn.dataset[billing] || btn.dataset.monthly || btn.dataset.yearly)) ||
btn.getAttribute(‘href’) ||
”;
if (!raw) return;
e.preventDefault();
// Strip any #hash and append go=1 once
const url = new URL(raw.replace(/#.*$/, ”), window.location.origin);
url.searchParams.set(‘go’, ‘1’);
// Navigate without any anchor to avoid initial jump
window.location.href = url.toString();
}, true);
// On load, if ?go=1 is present, do a controlled smooth scroll to the target, then clean the URL.
window.addEventListener(‘DOMContentLoaded’, function () {
const url = new URL(window.location.href);
const go = url.searchParams.get(‘go’);
// If page was previously linked with a #t4b-continue hash, remove it quietly
if (window.location.hash === ‘#t4b-continue’) {
history.replaceState(null, ”, url.pathname + url.search);
}
if (go === ‘1’) {
const target = document.getElementById(‘t4b-continue’);
if (target) {
// Small delay to ensure layout is ready before scrolling
setTimeout(function () {
target.scrollIntoView({ behavior: ‘smooth’, block: ‘start’ });
}, 150);
}
// Clean the ?go=1 from the URL so refreshes don’t scroll again
url.searchParams.delete(‘go’);
history.replaceState(null, ”, url.pathname + (url.search ? ‘?’ + url.searchParams.toString() : ”) + ”);
}
});
})();