I never usually use Safari, but I used it today for some reason. I clicked on a picture in google images, and got this screen (image attached). I can't get rid of the pop-up window, it just re-appears every time I click okay. I can't clear history/cache because all the options are greyed out due to the active window. I also cannot delete Safari because it comes with the Mac. Even when I shut down/reboot, the window is still there when I open Safari. I don't mind just using another browser, but I don't like knowing that evil popup is always hiding in my Safari. Help, I don't know what to do!