.index-slide {
    width: 793px;
    height: 487px;
    float: left;
    overflow: hidden;
    position: relative;
    zoom: 1;
  }
  .index-slide .a_bigImg {
    position: absolute;
    top: 0px;
    left: 0px;
    display: none;
    width: 100%;
    z-index: 8;
  }
  .index-slide .a_bigImg a.img {
    width: 500px;
    height: 350px;
    position: absolute;
    left: 0px;
    top: 0px;
  }
  .index-slide .a_bigImg span {
    display: block;
    width: 793px;
    height: 50px;
    position: absolute;
    left: 0px;
    bottom: 0px;
    color: #fff;
    font-size: 18px;
    line-height: 50px;
    padding-left: 10px;
    background: url("../images/oprict_title.png") repeat;
  }
  .index-slide .a_last,
  .index-slide .a_next {
    position: absolute;
    width: 30px;
    height: 55px;
    background: url("../images/focus_btn.png") no-repeat;
    z-index: 9;
    text-indent: -9999px;
  }
  .index-slide .a_last {
    top: 50%;
    margin-top: -37px;
    left: 0;
    background-position: 0 -55px;
    cursor: pointer;
  }
  .index-slide .a_last:hover {
    background-position: 0 0;
  }
  .index-slide .a_next {
    top: 50%;
    margin-top: -37px;
    right: 0;
    background-position: -30px -55px;
    cursor: pointer;
  }
  .index-slide .a_next:hover {
    background-position: -30px 0;
  }
  .index-slide .ul_change_a1 {
    position: absolute;
    right: 20px;
    bottom: 15px;
    z-index: 9;
  }
  .index-slide .ul_change_a1 li {
    display: inline-block;
    width: 10px;
    height: 10px;
    cursor: pointer;
    margin-left: 5px;
    float: left;
  }
  .index-slide .ul_change_a1 li a {
    display: block;
    width: 10px;
    height: 10px;
    background: url("../images/slide_off.png") no-repeat;
  }
  .index-slide .ul_change_a1 li a.now {
    background: url("../images/slide_on.png") no-repeat;
  }