MLB.com always brings up this popup... How do I stop this from coming up every time.?

MLB.com always brings up this popup "This page uses fonts that need to be temporarily installed. This is usually safe. Do you want to allow these fonts to be downloaded?" How do I stop this from coming up every time. It pops up between every page on the site. I want to know how to stop it.
Update: They aren't really pop ups. They like windows noting a security problem. It only started happening about a week ago. I think I might of changed a setting or something.
Update 2: If I knew what the font was I would install it.
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