ul.tree, ul.tree ul {
    list-style-type: none;
    padding-left: 2em;
    text-align: left;
    margin-left: 0;
}

.tree a {
   text-decoration: none;
}

.tree .expander {
    color: black;
    display: block;
    float: left;
    height: auto;
    margin-left: -1.25em;
    padding-left: 0;
    text-align: center;
    width: 1em;
}

.tree .expander:link,
.tree .expander:visited,
.tree .expander:active,
.tree .expander:hover {
	color: black;
    text-decoration: none;
}

.tree ul.closed {
    display: none;
}