Right-click->"Open in new tab" works fine.
I see this is because of the trackStream function calling e.preventDefault() and "manually" changing window.location to the stream url.
A solution could be to remove the e.preventDefault() call, but I see why it's there.. maybe somehow detect if a new tab should be opened and calling window.open(url, "_blank") instead?
A more elegant solution would be to change the actual link to the
-value and having that page respond with a redirect to the actual stream url.'/livestream/performView/chan_id/'+parseInt($(this).data('id'))