.slidesjs-navigation{

    border: 0 none;
    display: block;
    height: 30px;
    text-indent: -9999px;
    width: 30px;
    cursor: pointer;
    position: absolute;
    top: 50%;
    z-index: 99;
}

.slidesjs-previous{
    left: 20px;
    background: url("../lib/themes/default/arrows.png") no-repeat scroll 0 0;
}

.slidesjs-next{
    right: 20px;
    background: url("../lib/themes/default/arrows.png") no-repeat scroll 100% 0;
}