function slideSwitch() {
    var $active = $('#slide-images IMG.active');
    
    if ( $active.length == 0 ) $active = $('#slide-images IMG:last');

    var $next =  $active.next().length ? $active.next()
        : $('#slide-images 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() {
        setInterval( "slideSwitch()", 5000 );
    });