I've found following solution in documentation.
Second one from behind in Commands
section.
resume - Resumes a paused slideshow.
$('.cycle-slideshow').cycle('resume');
Hope it was what you were looking for.
Edit:
Try following solution, note that it will work only for first one) slideshow on your site:
$(window).scroll(function(){
var animatedElement = document.getElementsByClassName('cycle-slideshow')[0],
animatedElementPosition = animatedElement.offsetTop,
animatedElementHeight = animatedElement.offsetHeight,
currentScrollPosition = window.pageYOffset,
resumed = false;
if( (currentScrollPosition >= animatedElementPosition) &&
(currentScrollPosition <= animatedElementPosition + animatedElementHeight ) ){
if(!resumed){
$('.cycle-slideshow').cycle('resume');
resumed = true;
}
} else {
if(resumed){
$('.cycle-slideshow').cycle('pause');
resumed = false;
}
}
});
Edit 2: When I run script on your website I got following error:
Uncaught TypeError: $(...).cycle is not a function
Which probably means, that there is problem due to jQuery isn't included once, but more.
Yes it is, in your html:
<script src="js/jquery-2.0.3.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
If you are sure that removing the second one won't take impact on your website features eg. another plugins may require this older version of jquery, then remove it! :) Should work.
P.S. Notice that when you scroll down to up, your animation will appear faster then it should, because "cycle-slideshow" height is much bigger than image I could see.