Try this out:- http://jsfiddle.net/adiioo7/RvCS6/
JS:-
$(".click-for-more").click(function(e){
e.preventDefault();
$('.mosaic').show("explode", { pieces: 64 }, 2000);
});
$(".close-btn").click(function(){
$('.mosaic').hide("explode", { pieces: 64 }, 2000);
});