function slideSwitch() {
var $active = $('#slideshow IMG.active');
if ($active.length == 0) $active = $('#slideshow IMG:last');
var $next = $active.next().length ? $active.next()
: $('#slideshow IMG:first');
$active.addClass('last-active');
$next.css({ opacity: 0.0 })
.addClass('active')
.animate({ opacity: 1.0 }, 4000, function() {
$active.removeClass('active last-active');
});
}
$(function() {
setInterval("slideSwitch()", 5000);
});