}
scrollbar[orient="vertical"] > scrollbarbutton[type="increment"] {
background-image: url("chrome://global/skin/scrollbar/arrow-down.png");
border-radius: 0 0 50% 50%;
}
scrollbar[orient="vertical"] > scrollbarbutton[type="increment"] {
background-image: url("chrome://global/skin/scrollbar/arrow-down.png");
border-radius: 0 0 50% 50%;