function switcher() {
	var act = 0;
	var max = 4;
	var speed = 'slow';
	setInterval(function(){
		jQuery('img.polecane' + act).fadeOut(speed, function(){
                        $('.kropka'+act).removeClass('active');
			act = (act + 1) % max;
                        $('li.kropka'+act).addClass('active');
			jQuery('img.polecane' + act).fadeIn(speed);
		});
	}, 6000);
}
jQuery(function(){switcher();})