Safari wont show Images or videos

Hey there,
so over the past few days safari has been acting up a little bit
At first it wouldn't show some pictures on a few different sites, and instead just a little blue square with a question mark in the center.
I delt with it, and figured it was the site.
Then, videos wouldn't work ANYWHERE, and a little message would appear saying that windows media player would open the videos but I'd have to download them.
and now, Safari won't load ANY pictures and wont play ANY videos
what's happening???

-Emoguy