Script appearing on page

[Princess_Piggie]

Just had this pop up as I was replying to a thread. I've also been getting a pop-up message saying that entering such and such data requires me to leave the page, then the option to leave/stay when clicking "post quick reply" on and off for a few days now. Thought I'd let you guys know.

 

[Princess_Piggie]

It used to happen every once in a while so I just left it be, but the past few days it's been pretty much every time I posted a reply. I know it's probably nothing but I figure better to say something in case it could escalate and cause actual problems.