Decrease in height value here accordingly in same variant::
.ja-slidewrap-style2 .ja-slide-thumbs-wrap {mod_ja…ow2.css (line 233)
background:url(“../images/line-slideshow.gif”) no-repeat scroll right 11px transparent !important;
bottom:0;
height:80px !important;
margin-left:27px;
overflow:visible;
position:relative;
right:0;
top:0;
width:662px !important;
z-index:150;
}
.ja-slidewrap-style2 .ja-slide-thumbs, .ja-slidewrap-style2 .ja-slide-thumbs-mask, .ja-slidewrap-style2 .ja-slide-thumbs-handles {mod_ja…ow2.css (line 263)
height:80px !important;
margin:0;
position:absolute;
right:auto;
width:auto !important;
}
and
.ja-slidewrap-style2 .ja-slide-thumbs-handles span {mod_ja…ow2.css (line 305)
height:80px !important;
}
Css file reference:: /templates/ja_social/css/mod_jaslideshow2.css