// http://hv-designs.co.uk/2010/01/13/learn-how-to-add-a-jquery-fade-in-and-out-effect/

jQuery(function() {
// OPACITY OF BUTTON SET TO 60%
jQuery(".ngg-gallery-thumbnail a img").css("opacity","0.6");
 
// ON MOUSE OVER
jQuery(".ngg-gallery-thumbnail a img").hover(function () {
 
// SET OPACITY TO 100%
jQuery(this).stop().animate({
opacity: 1.0
}, "fast");
},
 
// ON MOUSE OUT
function () {
 
// SET OPACITY BACK TO 60%
jQuery(this).stop().animate({
opacity: 0.6
}, "fast");
});
});