Dear All 
I made a module in this i use timer every thing is working fine but the browser page is moving up or moving down when the timer execute. For example if a open the site and from the top of the page i scroll down automatically the page moves up when the interval refresh or if i make the page down then and stay there 3 min and then move up then automatically page will scroll down when the interval run... 

As a confirmation i delete this module then this problem was resolved any one have an idea about it ? 

here is my code 

ASCX code 

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="shoppingCartStatus.ascx.cs" Inherits="VIC_Complete_Project.Modules.ShoppingCart.shoppingCartStatus" %>
<asp:scriptmanager id="ScriptManager1" runat="server">
</asp:scriptmanager>
<asp:timer id="Timer1" runat="server" ontick="Timer1_Tick" interval="3000"  viewstatemode="Enabled">
</asp:timer>

<asp:updatepanel id="UpdatePanel1" runat="server">
   
        
Shopping cart details : <asp:label id="Label2" runat="server" text="Label"></asp:label>    Items » $<asp:label id="Label1" runat="server" text="Label"></asp:label>   
         
        <asp:button id="Button1" runat="server" text="View Cart" class="viewCartButton">             onclick="Button1_Click"/>
    </asp:button>
   
        <asp:asyncpostbacktrigger controlid="Timer1" eventname="Tick">
    </asp:asyncpostbacktrigger>
</asp:updatepanel>

Code behind 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using DotNetNuke.Common.Utilities;
using DotNetNuke.Common;

namespace VIC_Complete_Project.Modules.ShoppingCart
{
    public partial class shoppingCartStatus : DotNetNuke.Entities.Modules.PortalModuleBase
    {
        protected void Page_Load(object sender, EventArgs e)
        {
          
           
        }

        private void loadMiniCartAmount()
        {
            try
            {
                UDF mydb = new UDF(); // my own class
                DataTable dt;
                string spName = "vic_cart_miniCart";
                string[] field = new string[1];
                string[] fieldValue = new string[field.Length];

                field[0] = "@userRefName";
                fieldValue[0] = Session["orderRefId"].ToString();


                dt = mydb.loadDataTable(spName, field, fieldValue);
                Label1.Text = dt.Rows[0]["amount"].ToString();
                Label2.Text = dt.Rows[0]["totalProducts"].ToString();
            }
            catch
            {
                Label1.Text = "0";
                Label2.Text = "0.00";
            }
        }

        protected void Timer1_Tick(object sender, EventArgs e)
        {
            loadMiniCartAmount();
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            UDF myUdf = new UDF();
            int myTabId = myUdf.findPageTabId("VIC-Card-shoppingCart", this.PortalId);
            Response.Redirect(Globals.NavigateURL(myTabId));
            
        }
    }
}

The code is working fine just it moving the page up or down as per the timer