如何实现图片的动态切换(间隔几秒就切换下一张)

如何实现图片的动态切换(间隔几秒就切换下一张)

  1html代码

将这段js代码放在要显示图片的位置,例如:放在了td中:

     <td>

        <script type="text/javascript">

 

var focus_width=200

var focus_height=300

var text_height=30

var swf_height = focus_height+text_height

var pics='<%=pics %>'

var links='<%=links %>'

var texts='<%=texts %>'

document.write(''" height="'+ swf_height +'">');

document.write('');

document.write('');

document.write(''&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'">');

document.write(''&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'" menu="false" bgcolor="#DADADA" quality="high" width="'+ focus_width +'" height="'+ swf_height +'" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer">');

document.write('

'
);

 

      script>

  td>

2)在.cs中给 全局变量 pics links texts 赋值,例如(供参考):

    protected string pics = string.Empty;

    protected string links = string.Empty;

protected string texts = string.Empty;

protected void Page_Load(object sender, EventArgs e)

{

    if (!IsPostBack)

  {

       //必须是jpg图片才能在flash里播放

         string sql = "select top 5 pic,id,title from tb_photo where commend=1 and right(pic,3)='jpg' order by id desc";

        DataTable dt = SqlHelper.ExecuteDataTable(CommandType.Text, sql);

                    for (int i = 0; i < dt.Rows.Count;i++ )

                    {

                        pics += "uploadfile/" +dt.Rows[i]["pic"].ToString() + "|";

                        links += "show.aspx?id=" + dt.Rows[i]["id"].ToString() + "|";

                        texts += dt.Rows[i]["title"].ToString() + "|";

                    }

                    dt.Dispose();

 

                    if (pics.Length > 0)//将最后的|去掉

                    {

                        pics = pics.Substring(0, pics.Length - 1);

                        links = links.Substring(0, links.Length - 1);

                        texts = texts.Substring(0, texts.Length - 1);

                 }  

   }

}

(3)这时浏览没有任何效果,缺少playswf.swf文件。拷贝playswf.swf文件到根目录(或其他位置,只要修改链接value="playswf.swf"),再浏览就可以了。没有该文件,就下载一个,大小10kb

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