a.btn1 {
  background: url(../img/sisetsu1.png) no-repeat 0 0;
  display: block;
  overflow: hidden;
}
a.btn2 {
  background-image: url(../img/sisetsu2.png);
  display: block;
  overflow: hidden;
}
a.btn3 {
  background-image: url(../img/sisetsu3.png);
  display: block;
  overflow: hidden;
}
a.btn4 {
  background-image: url(../img/sisetsu4.png);
  display: block;
  overflow: hidden;
}
a.btn5 {
  background-image: url(../img/sisetsu5.png);
  display: block;
  overflow: hidden;
}
a.btn6 {
  background-image: url(../img/sisetsu6.png);
  display: block;
  overflow: hidden;
}
a.btn7 {
  background-image: url(../img/sisetsu7.png);
  display: block;
  overflow: hidden;
}
a.btn8 {
  background-image: url(../img/sisetsu8.png);
  display: block;
  overflow: hidden;
}
a.btn9 {
  background-image: url(../img/sisetsu9.png);
  display: block;
  overflow: hidden;
}
a.btn11 {
  background-image: url(../img/sisetsu11.png);
  display: block;
  overflow: hidden;
}
a.btn12 {
  background-image: url(../img/sisetsu12.png);
  display: block;
  overflow: hidden;
}
a.btnguide {
  background-image: url(../img/sisetsu10.jpg);
  display: block;
  overflow: hidden;
}
a.btn1:hover {
  background: url(../img/sisetsu1h.png) 0 0;
  display: block;
  overflow: hidden;
}
a.btn2:hover {
  background-image: url(../img/sisetsu2h.png);
  display: block;
  overflow: hidden;
}
a.btn3:hover {
  background-image: url(../img/sisetsu3h.png);
  display: block;
  overflow: hidden;
}
a.btn4:hover {
  background-image: url(../img/sisetsu4h.png);
  display: block;
  overflow: hidden;
}
a.btn5:hover {
  background-image: url(../img/sisetsu5h.png);
  display: block;
  overflow: hidden;
}
a.btn6:hover {
  background-image: url(../img/sisetsu6h.png);
  display: block;
  overflow: hidden;
}
a.btn7:hover {
  background-image: url(../img/sisetsu7h.png);
  display: block;
  overflow: hidden;
}
a.btn8:hover {
  background-image: url(../img/sisetsu8h.png);
  display: block;
  overflow: hidden;
}
a.btn9:hover {
  background-image: url(../img/sisetsu9h.png);
}
a.btn11:hover {
  background-image: url(../img/sisetsu11h.png);
}
a.btn12:hover {
  background-image: url(../img/sisetsu12h.png);
}
a.btnguide:hover {
  background-image: url(../img/sisetsu10h.jpg);
  display: block;
  overflow: hidden;
}
a.btn1:visited {
  background-image: url(../img/sisetsu1v.png);
  display: block;
  overflow: hidden;
}
a.btn2:visited {
  background-image: url(../img/sisetsu2v.png);
  display: block;
  overflow: hidden;
}
a.btn3:visited {
  background-image: url(../img/sisetsu3v.png);
  display: block;
  overflow: hidden;
}
a.btn4:visited {
  background-image: url(../img/sisetsu4v.png);
  display: block;
  overflow: hidden;
}
a.btn5:visited {
  background-image: url(../img/sisetsu5v.png);
  display: block;
  overflow: hidden;
}
a.btn6:visited {
  background-image: url(../img/sisetsu6v.png);
  display: block;
  overflow: hidden;
}
a.btn7:visited {
  background-image: url(../img/sisetsu7v.png);
}
a.btn8:visited {
  background-image: url(../img/sisetsu8v.png);
  display: block;
  overflow: hidden;
}
a.btn9:visited {
  background-image: url(../img/sisetsu9v.png);
  display: block;
  overflow: hidden;
}
a.btn11:visited {
  background-image: url(../img/sisetsu11v.png);
  display: block;
  overflow: hidden;
}
a.btn12:visited {
  background-image: url(../img/sisetsu12v.png);
  display: block;
  overflow: hidden;
}
a.btnguide:visited {
  background-image: url(../img/sisetsu10v.jpg);
  display: block;
  overflow: hidden;
}