ul.ivh-treeview li.ivh-treeview-node-collapsed ul.ivh-treeview {
    display: none
}

ul.ivh-treeview .ivh-treeview-twistie-collapsed, ul.ivh-treeview .ivh-treeview-twistie-leaf {
    display: none
}

ul.ivh-treeview .ivh-treeview-node-collapsed .ivh-treeview-twistie-collapsed {
    display: inline
}

ul.ivh-treeview .ivh-treeview-node-collapsed .ivh-treeview-twistie-expanded {
    display: none
}

ul.ivh-treeview li.ivh-treeview-node-leaf .ivh-treeview-twistie-leaf {
    display: inline
}

ul.ivh-treeview li.ivh-treeview-node-leaf .ivh-treeview-twistie-collapsed, ul.ivh-treeview li.ivh-treeview-node-leaf .ivh-treeview-twistie-expanded {
    display: none
}