function filterItems() {
    var selectedValue = document.getElementById('filterSelect').value;
    var itemLists = document.querySelectorAll('.item_list');

    itemLists.forEach(function(itemList) {
        var dataCategory = itemList.getAttribute('data-auto');

        // Check if the selected option is 0 or the data-category matches the selected option
        if (selectedValue === 'all' || dataCategory === selectedValue) {
            itemList.style.display = 'block';
        } else {
            itemList.style.display = 'none';
        }
    });
}