.nav-group.tree .navigation-item{
			position:relative;
		}
		.nav-group.tree span.handler{
			width:16px;
			height:16px;
			background:url('images/close.gif') 50% 50% no-repeat;
			position:absolute;
			left:-5px;
			top:-2px;
			cursor:pointer;
			z-index:80;
		}
		.nav-group.tree ul.close,
		.nav-group.dropdown ul.close{
			display:none;
		}
		.nav-group.tree ul.open,
		.nav-group.dropdown ul.open{
			display:block;
		}