add_action('wp_footer', function() { ?>
    <script>
    document.addEventListener("DOMContentLoaded", function() {
        const sliders = document.querySelectorAll(".avia-slideshow");

        function activateVisibleSlider() {
            sliders.forEach(slider => {
                const isVisible = slider.offsetParent !== null;
                const slides = slider.querySelectorAll("li[data-img-url]");

                slides.forEach(slide => {
                    const bgUrl = slide.getAttribute("data-img-url");
                    if (isVisible) {
                        slide.style.backgroundImage = `url("${bgUrl}")`;
                    } else {
                        slide.style.backgroundImage = "none";
                    }
                });
            });
        }

        activateVisibleSlider();

        let resizeTimer;
        window.addEventListener("resize", () => {
            clearTimeout(resizeTimer);
            resizeTimer = setTimeout(activateVisibleSlider, 200);
        });
    });
    </script>
<?php }, 999);