//ilosc linkow w menu "katalog produktow"
    
		//var katalog_count=8;
		function show(id){		
			document.getElementById("kat"+id).className="active";			
			for (var i=1;i<id;i++){
				document.getElementById("kat"+i).className="kwadrat";				
			}	
			document.getElementById("katalog_bottom").className="bottom_active";	
		}			
		//schowaj wszystkie
		function hide(){		
			for (var i=1;i<=katalog_count;i++){				
				document.getElementById("kat"+i).className="noactive";				
			}
			document.getElementById("katalog_bottom").className="bottom_noactive";	
		}