.db_index {
  list-style-type:none;
  margin:0 auto 1em 5.5em;
}
.db_index li {
  float:left;
}
.db_index a {
  display:block;
  padding:2px;
  width:7em;
  margin:3px;
  text-align:center;
}
.db_index a:link {
  border:3px solid #009;
}
.db_index a:visited {
  border:3px solid #009;
}
.db_index a:hover {
  border:3px solid #f00;
  position:relative;
  top:1px;
  left:1px;
}
.db_index a:active {
  border:3px solid #f00;
}
.dbon {
	clear: both;
	margin-top: 2em;
}
ul {
  margin-top:0;
}
table,th,td {
    border:1px solid black;
    border-collapse:collapse;
    padding:0.1em 0.5em 0.1em 0.5em;
}
table {
    margin-bottom:2em;
}
th {
    background-color:#009;
    color:#fff;
    border-color:#fff;
}
th.classify{
    border:1px solid black;
    color:#000;
    background-color:#e6e6fa;
    vertical-align:top;
    text-align:left;
}
td {
    vertical-align:top;
}
td ul {
    padding:0;
    margin:0;
}
td ul li {
    list-style-type:none;
}
td ul li ul li{
    margin-left:1em;
    list-style-type:circle;
}