Here Lazy Load plugin is enabled. Images below the fold are not loaded. Timeout will trigger five seconds after all other elements of page have been loaded.
$(function() {
    $("img.lazy").lazyload({
        event : "sporty"
    });
});
$(window).bind("load", function() {
    var timeout = setTimeout(function() { $("img.lazy").trigger("sporty") }, 5000);
});      
      <img class="lazy" src="img/grey.gif" data-original="img/example.jpg" width="765" height="574">





