var slidetimer;

function slideSwitch() {
	var $active = $('#slideshow img.active');
	if($active.next().length == 0){
		clearTimeout(slidetimer);
		return;
	}
	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}, 1000, function() {
			$active.removeClass('active last-active');
		});
}
$(function() {
	slidetimer = setInterval( "slideSwitch()", 4000 );
});