.tree ul,
ol {
  padding: 0;
  margin: 0 0 0px 25px;
}

[class^="iconx-"],
[class*=" iconx-"] {
  display: inline-block;
  width: 14px;
  height: 14px;
  line-height: 14px;
  background-image: url("http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/img/glyphicons-halflings.png");
  background-position: 14px 14px;
  background-repeat: no-repeat;
  margin-top: 1px;
}

.tree {
  min-height: 20px;
  padding: 19px;
  margin-bottom: 20px;
  background-color: #fbfbfb;
  border: 1px solid #999;
  -webkit-border-radius: 4px;
  -moz-border-radius: 4px;
  border-radius: 4px;
  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
  -moz-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.05);
}
.tree li {
  list-style-type: none;
  margin: 0;
  padding: 10px 5px 0 5px;
  position: relative;
}
.tree li::before,
.tree li::after {
  content: "";
  left: -20px;
  position: absolute;
  right: auto;
}
.tree li::before {
  border-left: 1px solid #999;
  bottom: 50px;
  height: 100%;
  top: 0;
  width: 1px;
}
.tree li::after {
  border-top: 1px solid #999;
  height: 20px;
  top: 25px;
  width: 25px;
}
.tree li span {
  -moz-border-radius: 5px;
  -webkit-border-radius: 5px;
  border: 1px solid #999;
  border-radius: 5px;
  display: inline-block;
  padding: 3px 8px;
  text-decoration: none;
}
.tree li.parent_li > span {
  cursor: pointer;
}
.tree > ul > li::before,
.tree > ul > li::after {
  border: 0;
}
.tree li:last-child::before {
  height: 30px;
}
.tree li.parent_li > span:hover,
.tree li.parent_li > span:hover + ul li span {
  background: #eee;
  border: 1px solid #94a0b4;
  color: #000;
}

.icon-minus-sign {
  background-position: -24px -96px;
}

.icon-plus-sign {
  background-position: 0 -96px;
}

.icon-leaf {
  background-position: -120px -23px;
}

.icon-folder-open {
  background-position: -408px -120px;
  width: 16px;
}