asp.net用户控件调用js，主界面使用时会放置多个用户控件，只有一个的js会起作用。

用户控件界面代码：

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl1.ascx.cs" Inherits="WebApplication1.WebUserControl1" %>

<div>

                <asp:Button ID="Button1" runat="server" BackColor="red" Width="40" 

        BorderStyle="None" OnClick="UserOnClick" style="height: 17px" />

</div>

<script>

    var timename;

    function text() {

        timename = setInterval("change()", 1000);

    }



    function change() {

        var btnId = "<%=GetBtnId()%>";

        var btnColor = document.getElementById(btnId).style.backgroundColor;

        if (btnColor == 'blue') {

            document.getElementById(btnId).style.backgroundColor = 'red';

        }

        else {

            document.getElementById(btnId).style.backgroundColor = 'blue';

        }

    }



    function textClose() {

        clearInterval(timename);

    }

</script>

用户控件后台代码：

 protected void Page_Load(object sender, EventArgs e)

        {



        }



        private Color _flickerColor1;

        public Color FlickerColor1

        {

            get { return _flickerColor1; }

            set { _flickerColor1 = value; }

        }



        private Color _flickerColor2;

        public Color FlickerColor2

        {

            get { return _flickerColor2; }

            set { _flickerColor2 = value; }

        }



        public Color BackGroud

        {

            get { return this.Button1.BackColor; }

            set { this.Button1.BackColor = value; }

        }



        private bool isBroken;



        public bool IsBroken

        {

            get { return isBroken; }

            set {

                

                isBroken = value;

                if (isBroken)

                {

                    Page.ClientScript.RegisterStartupScript(Page.GetType(), "", "<script>text()</script>");

                }

                else

                {

                    Page.ClientScript.RegisterStartupScript(Page.GetType(), "", "<script>textClose()</script>");

                }

            }

        }



        /// <summary>

        /// 返回控件

        /// </summary>

        /// <returns></returns>

        public string GetBtnId()

        {

            return this.Button1.ClientID.ToString();

        }



        void timer_Tick(object sender, EventArgs e)

        {

            if (isBroken)

            {

                if (Button1.BackColor == Color.Red)

                {

                    Button1.BackColor = Color.Black;

                }

                else

                {

                    Button1.BackColor = Color.Red;

                }

            }

        }





        public event EventHandler Login; //添加事件句柄 



       protected void UserOnClick(object sender, EventArgs e)

        {

            if (Login != null)

                Login(this, new EventArgs()); //激活Login事件 

        }

调用界面前台：

<%@ Register src="WebUserControl1.ascx" tagname="WebUserControl1" tagprefix="uc1" %>



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <div style="margin:4,4,4,4;">

        

        <asp:Button ID="Button1" runat="server" Text="是否停止闪烁" onclick="Button1_Click" />

        <uc1:WebUserControl1 ID="WebUserControl13" runat="server" BackGroud="Black" />

        <uc1:WebUserControl1 ID="WebUserControl12" runat="server" BackGroud="Black" />

        <uc1:WebUserControl1 ID="WebUserControl11" runat="server" BackGroud="Black" />

    </div>

    </form>

    

</body>

</html>

调用界面后台：

 protected void Page_Load(object sender, EventArgs e)

        {



        }



        protected void OnLoginPress(Object Render, EventArgs e)

        {

            this.RegisterClientScriptBlock("", "<script>alert(1);</script>");

        }



        protected void Button1_Click(object sender, EventArgs e)

        {

            if (!WebUserControl11.IsBroken)

            {

                WebUserControl11.IsBroken = true;

            }

            else

            {

                WebUserControl11.IsBroken = true;

            }



            if (!WebUserControl12.IsBroken)

            {

                WebUserControl12.IsBroken = true;

            }

            else

            {

                WebUserControl12.IsBroken = true;

            }

        }

现在的问题是，当只使用一个用户控件，闪烁变色时，是没问题的，多个时会出问题，我想应该是用胡控件中的JS方法名都是一个造成的，就是在用户控件后台注册JS，我就可以控制js的方法名，但是在后台注册的定时器js无效了，想不出来用什么办法来实现自己的功能了。