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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() {
        event : "sporty"

$(window).bind("load", function() {
    var timeout = setTimeout(function() { $("img.lazy").trigger("sporty") }, 5000);
<img class="lazy" data-original="img/example.jpg" width="765" height="574">
BMW M1 HoodBMW M1 SideViper 1Viper CornerBMW M3 GTCorvette Pitstop