.collapsed
{
	background-image: url(tree/plusminus16.png);
	background-repeat: no-repeat;
	background-position: left top;
	padding-left: 18px;
	margin: 3px;
}

.expanded
{
	background-image: url(tree/plusminus16.png);
	background-repeat: no-repeat;
	background-position: left bottom;
	padding-left: 18px;
	margin: 3px;
}