var i;
i=0;
var attivo;





function apri(nomeLayer) { 

// IE
if (document.all) { document.all[nomeLayer].style.visibility = 'visible'; }
//NN 6 in su
if (document.getElementById) {document.getElementById(nomeLayer).style.visibility = 'visible';}

// VERSIONI DATATE DI NETSCAPE
if (document.layers) {document.layers[nomeLayer].visibility = "visible";}
 
}
// FINE CODICE NETSCAPE 
 
 
 
 
function chiudi(nomeLayer) { 
if (document.all) { 
 document.all[nomeLayer].style.visibility = 'hidden'; 
} 
else if (document.getElementById) { 
 document.getElementById(nomeLayer).style.visibility = 'hidden'; 
} 
else if (document.layers) { 
 document.layers[nomeLayer].visibility = "hidden"; 
} 
}