titledbutton#back {
  list-style-image            : url(chrome://global/skin/scroll-left.gif);
}
titledbutton#back[disabled] {
  list-style-image            : url(chrome://global/skin/scroll-left-disabled.gif);
}
titledbutton#next {
  list-style-image            : url(chrome://global/skin/scroll-right.gif);
}
titledbutton#next[disabled] {
  list-style-image            : url(chrome://global/skin/scroll-right-disabled.gif);
}

