Image Fade on Hover Effect with jQuery

I am using the Pinterest style grid layout for Podcast Gallery and Zero Dollar Movies. When you hover your mouse over any image thumbnail, it fades with a slow transition and goes back to its original state as soon you move the mouse out.

Internally, the fade-in on mouse-over effect is achieved by changing the opacity parameter of the image which the slow speed is achieve using CSS3 transitions. Here’s the code: