function slideSwitch() {

    var $active = $('.photo div.active');

    var $next =  $active.next().length ? $active.next() : $('.photo div:first');

    $active.addClass('last-active');
    $active.css({opacity: 1.0}).animate({opacity: 0}, 1000);

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}





$(function() {

    $('#stop').click(function() {
    	$('#play').css('display', 'block');
    	$('#stop').css('display', 'none');
		clearInterval(playSlideshow);
	});

	$('#play').click(function() {
		$('#play').css('display', 'none');
		$('#stop').css('display', 'block');
		playSlideshow = setInterval("slideSwitch()", 6000);
	});


	// zatrzymaj slideshow, wyswietl fotke statycznie

	$('.items img').click(function() {

		$('#stop').css('display', 'none');
		$('#play').css('display', 'block');
	
		var $active = $('.photo div.active');

		var $next = $(this).attr("class");
		
		if($active.attr("id") != ($next)) { 

	    	$active.css({opacity: 1.0}).animate({opacity: 0}, 1000);
	    	
	    	$('#'+$next).css({opacity: 0.0})
		        .addClass('active')
		        .animate({opacity: 1.0}, 1000, function() {
		            $active.removeClass('active last-active');
	        });
        
		}

        clearInterval(playSlideshow);

	})

});