img {
                border: 0;
            }
            /* ºËÐÄ´úÂë */
            .focus {
                width: 900px;
                height: 280px;
                overflow: hidden;
                position: relative;
            }

                .focus ul {
                    height: 380px;
                    position: absolute;
                }

                    .focus ul li {
                        float: left;
                        width: 900px;
                        height: 280px;
                        overflow: hidden;
                        position: relative;
                    }
                    .focus ul li .imgds{
                        width:900px;
                        height:290px;
                    }

                        .focus ul li div {
                            position: absolute;
                            overflow: hidden;
                        }

                .focus .btn {
                    position: absolute;
                    width: 60px;
                    height: 14px;
                    bottom: 10px;
                    text-align: center;
                    right: 257px;
                    border-radius: 10px;
                    background-color: #d0d0d0;
                    background-color: rgba(0,0,0,0.2);
                }

                    .focus .btn span {
                        display: inline-block;
                        _display: inline;
                        _zoom: 1;
                        width: 8px;
                        height: 8px;
                        _font-size: 0;
                        margin: 5px;
                        cursor: pointer;
                        background: #fff;
                        border-radius: 50%;
                        position: relative;
                        bottom: 2px;
                    }

                        .focus .btn span.on {
                            background: #333;
                            width: 14px;
                            border-radius: 10px;
                        }

                .focus .preNext {
                    width: 45px;
                    height: 100px;
                    position: absolute;
                    top: 90px;
                    background: url(img/sprite.png) no-repeat 0 0;
                    cursor: pointer;
                    display: none;
                }

                .focus .pre {
                    left: 0;
                }

                .focus .next {
                    right: 0;
                    background-position: right top;
                }