Slider button css

.slider_nav a,
.slider_nav a:visited {
    background: url("images/sprite.png") 0px -190px no-repeat;
    display: inline-block;
    width: 14px;
    height: 14px;
}
.slider_nav a.active,
.slider_nav a.active:visited,
.slider_nav a:hover {
    background-position: 0px -210px;
}