$(document).ready(function() {
	$('footer img').mouseenter(function(event) {
		$(this)
		.animate(
		{top: -20 }, {
			 duration: 'slow',
			 easing: 'easeOutElastic'
		})
		.animate(
		{top: 0 }, {
		 duration: 'slow',
		 easing: 'easeOutElastic'
		});
	});
});