My code as following,
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test_sendValue_toCountDown.aspx.cs" Inherits="Internal_test_sendValue_toCountDown" %>
<!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 align="center">
<span id="countdown" class="timer"></span>
<script type="text/javascript">
var seconds = 60;
function secondPassed() {
var minutes = Math.round((seconds - 30) / 60);
var remainingSeconds = seconds % 60;
if (remainingSeconds < 10) {
...
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