function swapImages() {
	var $active = $('#myGallery .active');
	var $next = ($('#myGallery .active').next().length > 0) ? $('#myGallery .active').next() : $('#myGallery img:first');   
	
	$next.fadeIn().addClass('active');
	$active.fadeOut(function() {
		$active.removeClass('active');
	});
}

$(document).ready(function(){
    setInterval('swapImages()', 4000);
})