function partnerRotate(interval = 3000) { const partners = document.querySelectorAll("img[src*='img/partner/']"); for (let i = 1; i < partners.length; i++) { partners[i].classList.add("hidden"); } let currentIndex = 0; const totalPartners = partners.length; setInterval(() => { partners[currentIndex].classList.add("hidden"); currentIndex = (currentIndex + 1) % totalPartners; partners[currentIndex].classList.remove("hidden"); }, interval); } window.onload = function () { partnerRotate(5000); };