treechildren::-moz-tree-checkbox(checked) {
  list-style-image: url("chrome://global/skin/icons/check.svg");
}

treechildren::-moz-tree-image(cyclerState1) {
  list-style-type: disc;
}

treechildren::-moz-tree-image(cyclerState2) {
  list-style-type: circle;
}

treechildren::-moz-tree-image(cyclerState3) {
  list-style-type: square;
}