function slideSwitch() {
    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, display: 'block'})
        .addClass('active')
        .animate({opacity: 1.0}, 'slow', function() {
            $active.removeClass('active last-active');
        });
}

$(function()
{
	$('#slideshow img:first').addClass('active');
	setInterval(slideSwitch, 2500);
});