.jssoral, .jssorar {

    display: block;

    position: absolute;

    /* size of arrow element */

    width: 55px;

    height: 55px;

    cursor: pointer;

    background: url('../images/a23.png') no-repeat;

    overflow: hidden;

}

.jssoral { background-position: -243px -33px; }

.jssorar { background-position: -303px -33px; }

.jssoral:hover { background-position: -3px -33px; }

.jssorar:hover { background-position: -63px -33px; }

.jssoral.jssoraldn { background-position: -123px -33px; }

.jssorar.jssorardn { background-position: -183px -33px; }