Strange Pop-Up Box...

I asked this on another forum I frequent and I was directed here for help, so thank you all in advance.

Anyways, recently, I've gotten a weird pop-up (yes, pop-up blocker is on) on 2 different occasions. I've gotten similar pop-ups in the past, but they never had my city in them. I'll just post a picture of the pop-up because it's easier to show it than describe it.

http://farm8.staticflickr.com/7095/7373890542_9a57410ec6_b_d.jpg

I've gotten the above pop-up on 2 different sites. I've cleared my history, cookies and cache after the 1st time it happened but to no avail. I've also had to reset my phone to get out of the screen (no way was I clicking ok). I've searched a bit on the Internet but haven't found really anyone else experiencing the same thing. So I'm hoping someone here can tell me anything about the pop-up, because it's kind of creepy. Also, no, my iPhone isn't jailbroken. Again, thanks.