See the demo site

Responsive images slideshow with captions and links

syntax 1:
{up slide_showbillboard=path subfolder}
syntax 2:
{up slide_showbillboard}
<img src="images/img.jpg" alt="caption"> // image with caption in alt
<a href="#"><img src="img.jpg"></a> // image with link
{/up slideshow_billboard}

Style CSS

Javascript parameters for configuration