淡入淡出

$(function(){
    $('#skippr').skippr({
        transition: 'fade'
    });
});

<div id="container">
    <div id="skippr">
        <div style="background-image: url(img/img1.jpg)"></div>
        <div style="background-image: url(img/img2.jpg)"></div>
        <div style="background-image: url(img/img3.jpg)"></div>
        <div style="background-image: url(img/img4.jpg)"></div>
        <div style="background-image: url(img/img5.jpg)"></div>
    </div>
</div>