.tree {
	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	font-size: 11px;
	padding: 10px;
	white-space: nowrap;
}
.tree img {
	border: 0px;
	height: 18px;
	vertical-align: text-bottom;
}
.tree a {
	color: #000;
	text-decoration: none;
}
.tree a:hover {
	color: #345373;
}
.tb_t{
  border-top:#BEBEBE 1px solid;
}
.tb_b{
  border-bottom:#BEBEBE 1px solid;
}
.tb_l{
   border-left:#BEBEBE 1px solid;
}
.tb_r{
    border-right:#BEBEBE 1px solid;
}