.BMap_stdMpZoom .BMap_button {
    background-image: url("http://api.map.baidu.com/images/mapctrls2d0.png");
    background-repeat: no-repeat;
    height: 21px;
    left: 12px;
    overflow: hidden;
    width: 22px;
    z-index: 10;
}
.BMap_stdMpZoom .BMap_button {
    background-image: url("http://api.map.baidu.com/images/mapctrls2d0.png");
    background-repeat: no-repeat;
    height: 21px;
    left: 12px;
    overflow: hidden;
    width: 22px;
    z-index: 10;
}
.BMap_stdMpZoomOut{
    background-position: 0 -265px;
    left: 0;
    top: 21px;
}
.BMap_stdMpZoomIn{
    background-position: 0 -221px;
    left: 0;
}