.slider_box {
    width: 940px;
    height: 370px;
    position: relative;
}

.slider {
    width: 940px;
    height: 370px;
    overflow: hidden;
}

.items {
    display: none;
}

.prev {
    background: url(../images/slider_prev.png) 0 0 no-repeat;
    left: 20px;
}

.next {
    background: url(../images/slider_next.png) 0 0 no-repeat;
    right: 20px;
}

.prev,.next {
    width: 80px;
    height: 80px;
    display: block;
    position: absolute;
    z-index: 99;
    top: 145px;
}

.prev:hover {
    background: url(../images/slider_prev.png) 0 -80px no-repeat;
}

.next:hover {
    background: url(../images/slider_next.png) 0 -80px no-repeat;
}