function F_slideShow() {
	var $active = $('#slideshow img.active');
	if ( $active.length == 0 ) $active = $('#slideshow img:first');
	var $next =	$active.next().length ? $active.next() : $('#slideshow img:first');
	$next.addClass('last-active');
	$active.css({opacity: 0.0}).addClass('last-active');
	$next.css({opacity: 1.0}).addClass('active');
	$active.removeClass('active last-active');
}

$(document).ready(function() {
	setInterval("F_slideShow()", 4000);
});