div.tree-child
{
    background: url(../image/tree.png) no-repeat 11px center;
}
div.tree-child-last
{
    background: url(../image/tree-bottom.png) no-repeat 11px center;
}
[dir="rtl"] div.tree-child, [dir="rtl"] div.tree-child-last
{
    background-position: -65px center;
}
div.tree-child-horizontal
{
    background: url(../image/tree.png) no-repeat -11px center;
}