jQuery(window).on('load', function(){
let big = document.querySelector('#big-slider .swiper').swiper;
let top = document.querySelector('#top-slider .swiper').swiper;
let bottom = document.querySelector('#bottom-slider .swiper').swiper;
big.on('slideChange', function(){
let current = big.realIndex;
top.slideToLoop(current + 1);
bottom.slideToLoop(current + 2);
});
});
