Thread navigation buttons don't work, takes me to pop ups

[Cizak]

This seems to only happen when I'm logged out. The buttons for navigating the pages of a thread takes me to a pop up site instead of working as intended. Refreshing the forum page fixes this about 50% of the time.

[theasl]

See here (http://www.giantitp.com/forums/showthread.php?522891-Some-sorta-spam-thing-on-the-comic), it's an invisible ad that can cover up the buttons.