function japanese(){
window.open("jp/main.html", "main", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=910,height=660");
}

function english(){
window.open("en/main.html", "main", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=910,height=660");
}

function italiano(){
window.open("itali/main.html", "main", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,width=910,height=660");
}