easing slider php editing

i’m using the Easing Slider plugin on this site.

it works great but there’s no setting to have the pages (that the pics link to) open up in a separate window.

can anyone please tell me how to edit the slider php code to make that happen? i’m guessing i need to do something in this part of the code from the easingslider.php file (https://pastebin.com/1QCPzTL2), but i’m not sure what.

please advise. thanks in advance.