$(function() {

// OPACITY OF BUTTON SET TO 2%

$(".fade").css("opacity","0.8");

// ON MOUSE OVER
$(".fade").hover(function () {
 
// SET OPACITY TO 100%
$(this).stop().animate({
opacity: 1
}, 500);
;
},
 
// ON MOUSE OUT
function () {
 
// SET OPACITY BACK TO 2%
$(this).stop().animate({
opacity: 0.8
}, 500);
});
});