function slideSwitch() {
        var $active = $('#slideshow IMG.active');

        if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

        var $sibs  = $active.siblings();
        var rndNum = Math.floor(Math.random() * $sibs.length );
        var $next  = $( $sibs[ rndNum ] );

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

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

    $(function() {
        setInterval( "slideSwitch()", 5000 );
    });