button,
input[type="button"],
input[type="submit"] {
  height: 25px;
  margin: 0 3px;
  white-space: nowrap;
}

.field_btn button,
.field_btn input[type="button"],
.field_btn input[type="submit"] {
  min-width: 50px;
}

button,
input[type="button"],
input[type="submit"] {
  color: white;
  font-size: 10px;
  font-family: "ＭＳ Ｐゴシック", Osaka, "ヒラギノ角ゴ Pro W3";
  text-decoration: none;
  vertical-align: middle;
  padding-right: 10px;
  padding-left: 10px;
  background-color: #333333;
  border: 1px solid #000000;
  background-image: url(img/btn_img.jpg);
}

button:hover,
input[type="button"]:hover,
input[type="submit"]:hover {
  background: #000000;
  color: #ccc;
  border: 1px solid #000000;
}

button[disabled="disabled"],
input[type="button"][disabled="disabled"],
input[type="submit"][disabled="disabled"] {
  color: #999999;
  font-size: 10px;
  font-family: "ＭＳ Ｐゴシック", Osaka, "ヒラギノ角ゴ Pro W3";
  text-decoration: none;
  vertical-align: middle;
  padding-right: 10px;
  padding-left: 10px;
  background-color: #E5E5E5;
  border: 1px solid #999999;
}
 
button[disabled="disabled"]:hover,
input[type="button"][disabled="disabled"]:hover,
input[type="submit"][disabled="disabled"]:hover {
  color: #999999;
  font-size: 10px;
  font-family: "ＭＳ Ｐゴシック", Osaka, "ヒラギノ角ゴ Pro W3";
  text-decoration: none;
  vertical-align: middle;
  padding-right: 10px;
  padding-left: 10px;
  background-color: #E5E5E5;
  border: 1px solid #999999;
}

/* CSS Hack */
/* not IE6&7 */
html>/**/body button { min-width: 50px; }
html>/**/body input[type="button"] { min-width: 50px; }
html>/**/body input[type="submit"] { min-width: 50px; }