.sy_prev,
    .sy_next,.sy_prev:hover,.sy_next:hover {
        position: absolute;
        width: 21px;
        height: 47px;
        top: 50%;
        margin-top: -23px;
        
        cursor: pointer;
        display: block;
        z-index: 10000;
    }
    .sy_prev {
        position: absolute;
        left: 0px;
        background: url(../image/play_button1.png) no-repeat 0px 0px;
    }
    .sy_next {
        position: absolute;
        right: 0px;
        background: url(../image/play_button1.png) no-repeat -738px 0px;
        
    }

    .slideshortcut a {
        color: #000000;
        text-decoration: none;
        
        display: block;
        position: absolute;
        z-index: 500;
        width: 21px;
        height: 47px;
        font-size: 40px;
        line-height: 40px;
        text-align: center;
        opacity: 0;
    }

        .slideshortcut a:hover {
            color: #000000;
            text-decoration: none;
        }