Edit in JSFiddle

$(document).ready(function() {
   $('#kslider').kslider({width:325,
                          height:200,
                          widthThumb:60,
                          heightThumb:37,
                          speed: 500,
                          sameSize: false,
                          opacity:0.4,
                          nav:true}); 
});

<div id="kslider">
    <div>
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/1.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/2.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/3.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/4.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/5.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/6.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/7.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/8.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/9.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/differentSize/10.jpg "alt="">
    </div>
    <div>
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/1.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/2.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/3.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/4.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/5.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/6.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/7.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/8.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/9.jpg" alt="">
        <img src="http://dev.kevingermain.com/kslider/img/thumbs/10.jpg" alt="">
    </div>
</div>

#kslider {
    box-shadow: 0px 0px 20px 6px #AAA;
    margin:15px 60px;
}    
#kslider .ksmall img {
    background-color:#999;
    border:2px solid #222;
    padding:2px;
}