/* tree */
.tree {
  display: block;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.tree li, .tree ul {
  display: block;
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.tree .control span{
	cursor:pointer;
	display:inline-block;
}

.tree span {
	padding-left: 5px;
	padding-right: 5px;
}

.tree li {
  line-height: 20px;
  margin-left: 18px;
  min-height: 22px;
  min-width: 18px;
  margin-top: -6px;
  white-space: nowrap;
  overflow:visible;
}

.tree > ul > li {
  margin-left: 0;
}
.tree ins {
  display: inline-block;
  height: 18px;
  margin-bottom: -4px;
  padding: 0;
  text-decoration: none;
  width: 16px;
  position:relative;
  cursor: pointer;
}

.tree li.open > ul {
  display: block;
}

.tree li a {
	color: black;
	height: 16px;
	line-height: 16px;
	margin: 0;
	text-decoration: none;
	white-space: nowrap;
	padding: 0 2px;
}

.tree a > ins {
  height: 16px;
  width: 16px;
  left:0px;
}