JQuery 懒加载

<script src="jslib/lazy/jquery-1.7.2.min.js"></script><script src="jslib/lazy/jquery.lazyload.min.js"></script><script src="jslib/lazy/jquery.scrollstop.min.js"></script><script>    $(function() {        $('img.lazy').lazyload({            effect:'fadeIn',            event: 'scrollstop'        });    });</script><img class="lazy" data-original="真实URL" src="占位图片URL" alt=""/>