ption id="observer">Observer</option>
    <option id="jquery-adapter">jQuery adapter</option>
    <option id="active-slide">Active section and slide</option>
    <option id="auto-height">Auto height</option>
    <option id="autoplay-video-and-audio">Autoplay Video and Audio</option>
    <option id="backgrounds">Background images</option>
    <option id="backgrounds-fixed">Fixed fullscreen backgrounds</option>
    <option id="background-video">Background video</option>
    <option id="callbacks">Call