basically they have two pictures, with a script where when you place the mouse over it, the 2nd picture will take place

The dot and the instruction are there to fool you.

edit, NVM, I didn't read the fine prints, he stated at the bottom. hahahaha. So yea, even instructions on how to. It's simple stuffs.

here



That's what you see

this is the 2nd pic with the script is being activated: