变量绑定一段JS代码显示滚动图片，当控件验证时，滚动图片不滚动了

变量绑定一段JS代码显示滚动图片，图片路径和图片标题是从数据库读取出来的，页面上用<%= image%>显示的 ，image是我定义的变量，  具体代码  /// <summary>
    /// 绑定滚动图片
    /// </summary>
    /// <returns></returns>
    public string GetImage()
    {
        int i = 0;
        bigImage += "<script>";
        List<News> list = NewsManage.SearchTOP4NewsInfo(1);
        foreach (News news in list)
        {
            i++;
            if (i == 1)
            {
                bigImage += " imgUrl1='" + news.Nimage + "';";
                bigImage += " imgtext1='" + news.Ntitle + "';";
                bigImage += " imgLink1=escape('#');";
            }
            if (i == 2)
            {
                bigImage += " imgUrl2='" + news.Nimage + "';";
                bigImage += " imgtext2='" + news.Ntitle + "';";
                bigImage += " imgLink2=escape('#');";
            }
            if (i == 3)
            {
                bigImage += " imgUrl3='" + news.Nimage + "';";
                bigImage += " imgtext3='" + news.Ntitle + "';";
                bigImage += " imgLink3=escape('#');";
            }
            if (i == 4)
            {
                bigImage += " imgUrl4='" + news.Nimage + "';";
                bigImage += " imgtext4='" + news.Ntitle + "';";
                bigImage += " imgLink4=escape('#');";
            }        }
        bigImage += " var focus_width=512;";
        bigImage += " var focus_height=194;";
        bigImage += " var text_height=20;";
        bigImage += " var swf_height = focus_height+text_height;";
        bigImage += " var pics=imgUrl1+'|'+imgUrl2+'|'+imgUrl3+'|'+imgUrl4;";
        bigImage += " var links=imgLink1+'|'+imgLink2+'|'+imgLink3+'|'+imgLink4;";
        bigImage += " var texts=imgtext1+'|'+imgtext2+'|'+imgtext3+'|'+imgtext4;";        bigImage += "document.write('<object classid=clsid:d27cdb6e-ae6d-11cf-96b8-444553540000 codebase=http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0 width='+ focus_width +' height='+ swf_height +'>');";
        bigImage += "document.write('<param name=allowScriptAccess value=sameDomain><param name=movie value=images/focus1.swf><param name=quality value=high><param name=bgcolor value=#F0F0F0>');";
        bigImage += "document.write('<param name=menu value=false><param name=wmode value=opaque>');";
        bigImage += "document.write('<param name=FlashVars value=pics='+pics+'&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'>');";
        //bigImage += "document.write.('<embed src=focus2.swf quality=high pluginspage=http://www.macromedia.com/go/getflashplayer type=application/x-shockwave-flash width='+ focus_width +' height='+ swf_height +' FlashVars=pics='+pics+'&links='+links+'&texts='+texts+'&borderwidth='+focus_width+'&borderheight='+focus_height+'&textheight='+text_height+'></embed>';";
        bigImage += "document.write('</object>');";
        bigImage += "</script>";
        return bigImage;
    }
最后这个方法的返回值赋给iamge变量。
页面上还有这些代码
                   <input type="text" class="text_1" runat="server" id="txtGuestEmail" name="txtGuestEmail"
                                value="请输入Email" onblur="verifyAddress();" onfocus="myFocus()" />
                            <input type="button" value="获取" class="btn_1" causesvalidation="false" runat="server" id="Button1" name="Button1"
                                onserverclick="Button1_ServerClick" />当点击按钮时 变量绑定的数据不能显示了，就是开始在页面加载时 我已经给变量绑定了数据。 我在执行按钮点击事件时，又重新绑定了数据，如：
protected void Button1_ServerClick(object sender, EventArgs e)
    {
        string email = txtGuestEmail.Value;
        GuestRelation relation = new GuestRelation();
        relation.GrEmail = email;
        relation.GrState = "未回复";
        int i = GuestRelationManage.InsertGuestRelation(relation);
        if (email.Length == 0)
        {
            Page.RegisterStartupScript("1", "<script>alert('邮件不为空！');</script>");
            DataBindCompany();
            DataBindNotice();
            ViewState["image"] = GetImage();
            image = (string)ViewState["image"];
        }
        else if (email.Trim() == "请输入Email")
        {
            GetImage();
            ScriptManager.RegisterStartupScript(Button1, this.GetType(), "warning",
"alert('未输入邮件地址！')", true);
            ViewState["image"] = GetImage();
            image = (string)ViewState["image"];
            DataBindCompany();
            DataBindNotice();
        }
        else
        {
            if (i > 0)
            {
                GetImage();
                ScriptManager.RegisterStartupScript(Button1, this.GetType(), "warning",
    "alert('信息发送成功！')", true);
                DataBindCompany();
                DataBindNotice();
                ViewState["image"] = GetImage();
                image = (string)ViewState["image"];
                this.txtGuestEmail.Value = "请输入Email";
            }
            else
            {
                ScriptManager.RegisterStartupScript(Button1, this.GetType(), "warning",
"alert('信息发送失败！请与管理员联系！')", true);
                DataBindCompany();
                DataBindNotice();
                ViewState["image"] = GetImage();
                image = (string)ViewState["image"];
            }
        }
    }
当执行点击事件弹出提示框时，页面滚动图片不滚动了， 查看源文件，又能看来用变量绑定的数据，
这是怎么回事啊？ 急啊  谢谢各位高手了 谢谢 非常谢谢....