(function () { var nav = document.getElementById('ahas-kirkhs-main-navigation'); if (!nav || nav.getAttribute('data-ahas-dropdown-ready') === 'true') return; nav.setAttribute('data-ahas-dropdown-ready', 'true'); var dropdowns = Array.prototype.slice.call( nav.querySelectorAll('details[name="ahas-kirkhs-main-menu"]') ); function closeMenus(except) { dropdowns.forEach(function (dropdown) { if (dropdown !== except) dropdown.open = false; }); } // Fallback for browsers without native named-details exclusivity. dropdowns.forEach(function (dropdown) { dropdown.addEventListener('toggle', function () { if (dropdown.open) closeMenus(dropdown); }); }); // Clicking anywhere outside the navbar closes the open dropdown. document.addEventListener('pointerdown', function (event) { if (!nav.contains(event.target)) closeMenus(); }, true); // On desktop, moving away from the navbar or its dropdown closes it. nav.addEventListener('mouseleave', function () { if (window.matchMedia && window.matchMedia('(hover: hover) and (pointer: fine)').matches) { closeMenus(); } }); // Accessibility: Escape dismisses menus without navigating away. document.addEventListener('keydown', function (event) { if (event.key !== 'Escape') return; var focused = nav.contains(document.activeElement); var expanded = dropdowns.filter(function (dropdown) { return dropdown.open; })[0]; closeMenus(); if (focused && expanded) { var summary = expanded.querySelector('summary'); if (summary) summary.focus(); } }); })();