function startSlideshow() {
    var $active = $('#slideshow img.active');

    if ($active.length == 0) {
    	$active = $('#slideshow img:last');
    }

    var $next = $active.next().length ? $active.next() : $('#slideshow img:first');

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

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}

function initSlideshow() {
	$('#slideshow img:first').addClass('active');
	$('#slideshow').show();
}

$(function() {
	var l = parseInt($('#slideshow img').length);
	
	initSlideshow();
	if (l > 1) {
		setInterval("startSlideshow()", 4000);
	}
});