Pieces already comes with 300 ready-to-use animations grouped into three sets, IN (with fade-in effect), OUT (with fade-out effect) and MID (without fading effect). Check it out.

Javascript & Html

Pieces can be used both with javascript and html. So images can be animated with awesome effects simply adding some html attributes to your html <img> tags like this:

<img src="IMG_PATH" pi-mouseover="pieces109,50,50,0,reverse,false">

Are you looking for the Wordpress Plugin?

Pieces is also available for Wordpress. Check it out