ul#pulldown-menu { /* IE6 対策 */
  margin: 0;
  padding: 0;
  list-style: none;
  behavior: url("/includes/csshover.htc");
}
ul#pulldown-menu a {
  color: #2D859F;
  text-decoration: none;
  white-space: nowrap;
}
ul#pulldown-menu a:hover{
  background-color: #E4FAE2;
  color: blue;
  text-decoration: none;
}
ul#pulldown-menu li {
  float: left;
  position: relative;
  margin: 0;
  padding: 0;
  font-weight: bold;
}
ul#pulldown-menu li a {
  display: block;
  text-align: left;
  font-weight: bold;
}

/* 下層のメニューを不可視に */
ul#pulldown-menu li ul {
  display: none;
}

/* 疑似要素 :hover で下層のメニューを可視に */
ul#pulldown-menu li:hover ul {
  padding: 0 8px 0 8px;
  list-style: none;
  display: block;
  position: absolute;
  z-index: 100;
  background-color: white;
  border: 1px solid #c0c0c0;
  border-radius: 5px; -moz-border-radius: 5px; -webkit-border-radius: 5px;
}

ul#pulldown-menu li ul li {
  float: none;
  margin: 0;
  font-weight: normal;
  padding: 4px 0;
}