Letakkan css di atas </b:skin>
img{opacity:1;transition:opacity 1s}img[data-src]{opacity:0}
letakkan js di atas </body>
<script type='text/javascript'>//<![CDATA[
(function(){var elements = document.querySelectorAll('img[data-src]');var index = 0;var lazyLoad = function() { if(index >= elements.length) return;var item = elements[index]; if((this.scrollY + this.innerHeight) > item.offsetTop) {var src = item.getAttribute("data-src");item.src = src;item.addEventListener('load', function() {item.removeAttribute('data-src');});index++;lazyLoad();}};var init = function(){window.addEventListener('scroll', lazyLoad);lazyLoad();};return init();})();
//]]></script>
