And there you have it!
If there are lots of thumbnails and the containing block does not have enough room to show them, you can consider showing the thumbnails in multiple columns or rows by tweaking the js-image-slider.css. Another solution is to make the slider work together with Menucool jQuery Slider. See jQuery Slideshow.
Visit online Demo 5 and JavaScript Image Slider for detailed instructions.
This demo requires a license for its advanced features.