Make Nectar Slider Button open lightbox link or video

Add in the lightbox extra class here : 

and the JS in here 

For 1st Button use this code:

jQuery( document ).ready(function() {

jQuery(".lightbox .button:first-child a").attr("rel","prettyphoto");
  
});

For 2nd Button use this code

jQuery( document ).ready(function() {

jQuery(".lightbox .button:last-child a").attr("rel","prettyphoto");
  
});