function zmien_fotos(x, ile, now) {
		for (var i=1; i<=ile; i++) {
			$('#kalendarz'+i).css({opacity:0.0});
		}
		$('#kalendarz'+x).css({opacity:1});
		
		var n;
		//alert(now);
		if (x=='left') {
			n = now;
			now--;
			if (now==0) now=ile;
			
			$('#kalendarz'+n).animate({opacity:0.0},1000);
			document.getElementById('kalendarz'+n).style.display="none";
			document.getElementById('kalendarz'+now).style.display="inline";
			$('#kalendarz'+now).animate({opacity:1},1000);
			
		} else {
			n = now;
			now++;
			if (now>ile) now=1;
			
			$('#kalendarz'+n).animate({opacity:0.0},1000);
			document.getElementById('kalendarz'+n).style.display="none";
			document.getElementById('kalendarz'+now).style.display="inline";
			$('#kalendarz'+now).animate({opacity:1},1000);
			
		}
}