.banner .prev_button {
    position: absolute;
    top: 50%;
    left: 35px;
    z-index: 152;
    width: 42px;
    height: 42px;
    overflow: hidden;
    text-indent: -9999em;
    margin-top: -25px;
    cursor:pointer;
    background: url(images/sprite-default.png) no-repeat -42px -42px;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    transition: all 0.2s;}

.banner .next_button {
    position: absolute;
    top: 50%;
    right: 35px;
    z-index: 152;
    width: 42px;
    height: 42px;
    overflow: hidden;
    text-indent: -9999em;
    margin-top: -25px;
    cursor:pointer;
    background: url(images/sprite-default.png) no-repeat 0 -42px;
    -webkit-transition: all 0.2s;
    -moz-transition: all 0.2s;
    transition: all 0.2s;}

.banner .prev_button:hover, .banner .next_button:hover {
    opacity: 0.5 !important;}