Webmasters help needed.
 

go to any video on xvideos.com

while loading it in firefox or chrome, click F12, then in NETWORK

it shows all external files/images called by page.

the page calls http://static.xvideos.com/js/jquery.popunder.js

what i am not getting is , how are they calling this url ?

i checked html source and already included .js files , there is nowhere mention of jquery.popunder.js

so how is the page calling it ?

thanks for your time.