首页幻灯 [复制链接]

各位大佬，这段代码怎样加一个时间控制，图片切换速度
<script type="text/javascript">
                            $(function () {
                                $('#focus').slideFocus();
                            });
                            ds();
                            $(window).resize(function () {
                                ds()
                            });
                            function ds() {
                                var xwhd_w = $(".xwhd").width();
                                $(".focus").children("ul").children("li").css("width", xwhd_w);
                                var xwhd_l = $(".focus").children("ul").children("li").length;
                                $(".focus").children("ul").css("width", xwhd_w * xwhd_l);
                            }
                        </script>