ins.jstree-icon {
	background-image: url(images/icons/dark/triangle_right.png);
	background-position: 0 -5px;
}
li.jstree-leaf > ins.jstree-icon {
	<!-- this is single node, no child -->
}
li.jstree-open > ins.jstree-icon {
	background-image: url(images/icons/dark/triangle_down.png);
}
li.jstree-closed > ins.jstree-icon {
	background-image: url(images/icons/dark/play.png); <!-- node which have child -->
}
a.jstree-clicked {
	background: #FFC4C4;
}
div.jstree a {
	padding: 3px;
}