/* wc-header-scroll: transparent topbar at rest, blurred once the page is scrolled */
(function () {
  var THRESHOLD = 8;
  function update() {
    var bar = document.querySelector('.wc-fixed-topbar');
    if (!bar) return;
    var y = window.pageYOffset || document.documentElement.scrollTop || 0;
    bar.classList.toggle('wc-scrolled', y > THRESHOLD);
  }
  window.addEventListener('scroll', update, { passive: true });
  window.addEventListener('resize', update, { passive: true });
  window.addEventListener('load', update);
  document.addEventListener('DOMContentLoaded', update);
  var n = 0, iv = setInterval(function () { update(); if (++n > 60) clearInterval(iv); }, 200);
  update();
})();