$(document).ready(function () { setInterval( "slideSwitch();", 6000 ); });

function slideSwitch() {	 
	var $active = $('#pic-viewer IMG.active');    
	if ( $active.length == 0 ) $active = $('#pic-viewer IMG:last');
	var $next =  $active.next().length ? $active.next()
	   : $('#pic-viewer IMG:first');
	$active.addClass('last-active');
	$next.css({opacity: 0.0})
		.addClass('active')
		.animate({opacity: 1.0}, 1000, function() {
		$active.removeClass('active last-active');
	});		
}