.bookmark-item > .toolbarbutton-icon {
  margin: 0px !important;
  padding : 0px 2px 0px 0px !important;
  width: 18px !important;
  height: 16px !important;
  display: inline !important;
}

.bookmark-item:hover > .toolbarbutton-icon {
  background: url("chrome://browser/skin/bookmark-hover-mid.png") repeat-x !important;
}

.bookmark-item:hover:active > .toolbarbutton-icon {
  background: url("chrome://browser/skin/bookmark-open-mid.png") repeat-x !important;
}