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');
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()", 5000 );});