function slideSwitch() {

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

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

// use this to pull the images in the order they appear in the markup

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

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

// uncomment the 3 lines below to pull the images in random order

// 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()", 4000 );

});