Plugin enabled with gazillion images
When you have hundreds of images it is best to use James Padolseys scrollstop event. Compate this to page where plugin is disabled or page with larger images.
<script src="jquery.scrollstop.js" type="text/javascript"></script>
<img class="lazy" data-original="img/example.jpg" width="80" height="120" alt="">
$("img.lazy").lazyload({
event: "scrollstop"
});