div.tree { padding: 0 0 0 30px;}
li.tree_branch {
	list-style: none;
	position: relative;
	margin-left: -15px;
	border:none;
}

li.container input[type="checkbox"]
{
	position: absolute;
	left: 0;
	margin-left: 0;
	opacity: 0;
	z-index: 2;
	cursor: pointer;
	height: 1em;
	width: 1em;
	top: 0; 
}
li.container label
{
	cursor: pointer;
}
.tree_row :hover {
	background-color: #CECECE;
}

.tree_row + ol
{
	margin: -0.938em 0 0 0;
	height: 1em;
}

/* show / hide using css */
/*
li.container input[type="checkbox"] ~ ol
{
	margin: -0.938em 0 0 0;
	height: 1em;
}
li.container input[type="checkbox"] ~ ol > li { 
	display: none; 
	margin-left: -14px !important;
	padding-left: 1px; 
}

li.container input[type="checkbox"]:checked ~ ol
{
	margin: -1.25em 0 0 0;
	padding: 1.563em 0 0 30px;
	height: auto;
}
li.container input[type="checkbox"]:checked ~ ol > li { 
	display: block; 
	margin: 0 0 0.125em; 
}
li.container input[type="checkbox"]:checked ~ ol > li:last-child { 
	margin: 0 0 0.063em;
}
*/