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

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

    // use this to pull the images in the order they appear in the markup
    var $next =  $active.next().length ? $active.next()
        : jQuery('#slideshow IMG:first');

    $next.removeClass('hidden');

    // uncomment next 3 lines to pull the images in random order
    //var $sibs  = $active.siblings();
    //var rndNum = Math.floor(Math.random() * $sibs.length );
    //var $next  = jQuery( $sibs[ rndNum ] );

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

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 2000, function() {
            $active.removeClass('active last-active');
        });
}

jQuery(document).ready(function() {
   // Photos are not enabled while loading.  Once loaded, remove the hidden class
   jQuery('#slideshow img.hidden').removeClass('hidden');
   setInterval("slideShow()", 10000);
});