Asus K52J Screenshot button

I have a function+screenshot button but I have no idea where these pictures get saved to, or what program interacts with them.
I found it a couple weeks ago, but I've completely forgotten where. I would search for the folder, but I don't even remember the name.
Anyone have any input on this?

Wow, this got on Google really fast.
http://www.google.com/#hl=en&q=asus...=f&aqi=&aql=&oq=&gs_rfai=&fp=ea2cd8eab02d18af