function toggleIMCASites() {
  const menu = document.querySelector('.imca-header-sites');
  const btn  = document.querySelector('#imca-sites-toggle'); // optional ARIA hook

  // If jQuery is available, use its sliding animation
  if (window.jQuery) {
    const $menu = jQuery(menu);
    const isVisible = $menu.is(':visible');

    if (isVisible) {
      $menu.slideUp(200, () => {
        // Keep hidden state tidy for accessibility
        menu.hidden = true;
        if (btn) btn.setAttribute('aria-expanded', 'false');
      });
    } else {
      // Ensure it's unhidden before slideDown so height can be measured
      menu.hidden = false;
      $menu.hide().slideDown(200, () => {
        if (btn) btn.setAttribute('aria-expanded', 'true');
      });
    }
    return;
  }

  // Fallback: your original behavior (no animation)
  if (menu.style.display === 'block') {
    menu.style.display = 'none';
    menu.hidden = true;
    if (btn) btn.setAttribute('aria-expanded', 'false');
  } else {
    menu.style.display = 'block';
    menu.hidden = false;
    if (btn) btn.setAttribute('aria-expanded', 'true');
  }
}

function disableButton(btn,processing=false) {
    btn.disabled = true;
    if(processing==true) {
        // TODO - Add processing spinner
    }
}