function slideSwitch(switchSpeed) {

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

    

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



    var $next =  $active.next('IMG').length ? $active.next('IMG')

        : $('#slideshow IMG:first');



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

    

    

    $next.css({opacity: 0.0})

        .addClass('active')

        .animate({opacity: 1.0}, switchSpeed, function() {

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

        });

}



$(function() {

    setInterval ( "slideSwitch(2000)", 6000 );    

});