box.first {
  -moz-binding: url('chrome://mochikit/content/a11y/accessible/nsIAccessible_name.xbl#first');
}

.second {
  -moz-binding: url('chrome://mochikit/content/a11y/accessible/nsIAccessible_name.xbl#second');
}

.third {
  -moz-binding: url('chrome://mochikit/content/a11y/accessible/nsIAccessible_name.xbl#third');
}