.nomal {  font-size: 14px; line-height: 20px;}
.small { font-size: 12px; line-height: 14px;}
.under {  background-image : url(under_back.gif); background-repeat: repeat-x;}
.menu_back {  background-image : url(menu_back.gif); background-repeat: repeat-x;}
.piano_back {  background-image : url(p01_back.jpg); background-repeat: no-repeat; background-color: #FFFFFF; background-position: right center;}