Well using JavaScript you could add the filter grey scale to all imgs.
Then onHover or onClick you can change the css class. So basically make that blur css class, and remove it from any image that is clicked.
It's Saturday, it's late, not going to code it. You got this though.
Disregard what I said, that's better.
Yeah, people if it has to be said,
IF YOU DON'T KNOW JAVASCRIPT
don't fucking add scripts to your shit.
It's just a bad idea.
Haha, trying to warn others about basic front-end security. Guess that makes me a shill.
Warns about front-end security.
Recommends simple CSS solution.
GORE FAG CONFIRMED.
Thanks divisionfag.