This issue is often due to the stack order of a HTML element. You can control this order by changing the z-index property. An element with greater stack order is always loaded in front of an element with a lower stack order.
In this case, you can open /modules/mod_jaslideshow/assets/themes/travel/style.css file, at approx line 22:
#ja-slideshow .ja-slide-thumbs-wrap.ja-horizontal, .ja-horizontal {
background: url("tab-slideshow.png") repeat scroll left top rgba(0, 0, 0, 0) !important;
border-bottom: 1px solid #C4C2C3
bottom: 0;
height: 40px !important;
position: absolute;
width: 960px !important;
z-index: 119; <<< change to this value
}
Once done, remember to clean JAT3 cache. Hope this helps.