演示：
下载：http://www.codepub.com/software/view-software-11789.html
或者把以下代码保存为 Times.hta 运行就行了
<!--
/*--------------------Windows Timer---------------------------------------------
Description:一个用于定时重启或关闭计算机的小工具，适用于Windows 2K/XP/2003
Author:黑虾
Email:idof@163.com
QQ:582708
WebSite:http://www.HTA.cc/
-------------------------------------------------------------------------------*/
-->
<html>
<head>
<title>♀Windows系统计时器♀</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<hta:application
id="WTimer"
maximizebutton="No"
minimizebutton="Yes"
singleinstance="Yes"
contextmenu="Yes"
sysmenu="Yes"
version="1.0"
innerborder="No"
caption="Yes"
showintaskbar="Yes"
border="Normal"
borderstyle="Normal"
applicationname="Windows Timer"
icon="TimerIco.ico"
/>
<Style type="text/css">
<!--
* { font-family:Courier New,Arial,Sans-serif;font-size:9pt; }
body { overflow-y:hidden; }
div a:link,div a:visited { text-decoration:none;color:#000 }
div a:hover { text-decoration:underline;color:#f00 }
#footerinfo { width:100%;display:table;margin-top:5px; }
#left { float:left;width:70%; }
#right { float:right;width:29%;text-align:right;margin-right:1px; }
-->
</Style>
<Script Language="JavaScript">
<!--
$bl_Sleep=false;
function getObject($obj) {
return(document.getElementById($obj));
}
String.prototype.parseInt=function() {
return(parseInt(this));
}
function getRadioVal($name) {
$oEms=document.getElementsByName($name);
for ($i=0;$i<$oEms.length;$i++) {
if ($oEms[$i].checked) { return($oEms[$i].value); }
}
}
function isDeclared($varName) {
return(typeof($varName)!="undefined");
}
function chStatus($name,$status) {
$ooEms=document.getElementsByName($name);
for ($a=0;$a<$ooEms.length;$a++) {
$ooEms[$a].disabled=$status;
}
}
function window.onload() {
$sWidth=window.screen.width;
$sHeight=window.screen.height;
$aWidth=400;
$aHeight=185;
window.resizeTo($aWidth,$aHeight);
window.moveTo(($sWidth-$aWidth)/2,($sHeight-$aHeight)/2);
document.bgColor="#d4d0c8";
getObject("StopButton").disabled=true;
getObject("left").innerHTML="提示：请选择您想要使用的功能！";
}
function Timer_Quit() {
window.close();
}
function Timer_Kernel() {
if ($bl_Sleep) {
if (isDeclared($time) && isDeclared($mod_time) && isDeclared($operation)) {
if ($time>0) {
$Oper_str="";
$Hint_str="";
$Titl_str="";
if ($operation=="rWin") {
$Oper_str="<span style=\"color:red\">提示：系统计时重启功能已启用，请注意保存！</span>";
}
else {
$Oper_str="<span style=\"color:red\">提示：系统计时关闭功能已启用，请注意保存！</span>";
}
if ($mod_time=="mod_minute") {
$tMinute=($time/60).toString().parseInt();
$tSecond=$time%60;
if ($tMinute!=0) {
if ($tSecond<10) {
$tSecond="0"+$tSecond;
}
$Titl_str="剩余时间："+$tMinute+"分"+$tSecond+"秒";
}
else {
$Titl_str="剩余时间："+$tSecond+"秒";
}
}
else {
$Titl_str="剩余时间："+$time+"秒";
}
getObject("left").innerHTML=$Oper_str;
document.title=$Titl_str;
$time=$time-1;
$o=setTimeout("Timer_Kernel()",1000);
}
else {
$Flag="";
if ($operation=="rWin") {
$Flag=6; //6为重启操作系统
}
else {
$Flag=1; //1为关闭操作系统
}
OperateWin32($Flag);
getObject("left").innerHTML="<span style=\"color:red\">提示：正在执行预定操作！</span>";
document.title="正在执行预定操作";
}
}
}
}
function Timer_Stop() {
$bl_Sleep=false;
if (isDeclared($o)) { clearTimeout($o); }
getObject("time").disabled=false;
getObject("mod_time").disabled=false;
chStatus("operation",false);
getObject("StartButton").disabled=false;
getObject("StopButton").disabled=true;
getObject("left").innerHTML="提示：请选择您想要使用的功能！";
document.title="♀Windows系统计时器♀";
}
function Timer_Start() {
$bl_Sleep=true;
$nowTime="";
$time=getObject("time").value;
$mod_time=getObject("mod_time").value;
$operation=getRadioVal("operation");
if (isNaN($time) || $time=="") {
alert("请正确设定一个时间值！ ");
getObject("time").select();
return;
}
else {
$time=$time.parseInt();
if ($mod_time=="mod_minute") { $time=$time*60; }
}
getObject("time").disabled=true;
getObject("mod_time").disabled=true;
chStatus("operation",true);
getObject("StartButton").disabled=true;
getObject("StopButton").disabled=false;
Timer_Kernel();
}
function OperateWin32($DownFlag) {
$OS_Pro=GetObject("WinMgmts:{(shutdown)}//./root/cimv2").ExecQuery("select * from win32_operatingsystem where primary=true");
for ($e=new Enumerator($OS_Pro);!$e.atEnd();$e.moveNext()) {
$getProcess=$e.item()
$getProcess.win32shutdown($DownFlag);
}
}
function ResponseKeyPress() {
if (event.keyCode==13) { event.keyCode=9; }
}
//-->
</Script>
</head>
<body>
<fieldset>
<table width="100%" border="1" cellpadding="4" cellspacing="3">
<form name="form1">
<tr>
<td width="25%">设定时间：</td>
<td width="75%"><input type="text" name="time" size="20" value="" onkeypress="ResponseKeyPress()" />
<select name="mod_time">
<option value="mod_minute">分钟</option>
<option value="mod_second">秒钟</option>
</select>
</td>
</tr>
<tr>
<td>功能选择：</td>
<td>
<input type="radio" name="operation" value="rWin" checked="checked" />重启
<input type="radio" name="operation" value="cWin" />关机
</td>
</tr>
<tr>
<td colspan="2" style="text-align:right">
<input type="button" name="StartButton" value=" 应用 " onclick="Timer_Start()" />
<input type="button" name="StopButton" value=" 取消 " onclick="Timer_Stop()" />
<input type="button" name="ExitButton" value=" 退出 " onclick="Timer_Quit()" />
</td>
</tr>
</form>
</table>
</fieldset>
<div id="footerinfo">
<div id="left"></div>
<div id="right">
作者：<a href="http://www.HTA.cc/" title="黑虾">黑虾</a>
</div>
</div>
</body>
</html>