document.defaultView.addEventListener("load",function(){var n=document.querySelectorAll(".vk_animation");if(n=Array.from(n))for(const e in n){const t=n[e];new IntersectionObserver(n=>{n[0].isIntersecting?t.classList.add("vk_animation-active"):t.classList.contains("vk_animation-once")||t.classList.remove("vk_animation-active")}).observe(t)}});