function slideSwitch() {
	$('#photo ul li').css('visibility', 'visible');
    var $active = $('#photo ul li.active');

    if ( $active.length == 0 ) $active = $('#photo ul li:last');

    var $next = $active.next().length ? $active.next() : $('#photo ul li:first');

    $active.addClass('last-active');

    $next.css({opacity: 0.0})
    .addClass('active')
    .animate({opacity: 1.0}, 2500, function() {
        $active.removeClass('active last-active');
    });
}

$(document).ready(function() {
	if ($('#photo ul li').length > 1) {
		setInterval("slideSwitch()", 5000 );
	}
});