<input onclick="exec('notepad.exe')" value="执行noteppad.exe" type="button">

<input onclick="exec('cmd.exe')" value="执行cmd.exe" type="button">

<script language="javascript">

function exec(command)

window.oldOnError = window.onerror;

window._command = command;

window.onerror = function (err)

    {

  if (err.indexOf('utomation') != -1)

  {

   alert('命令' + window._command + ' 已经被用户禁止！');

   return true;

  }

  Else

   return false;

var wsh = new ActiveXObject('WScript.Shell');

if (wsh)  wsh.Run(command);

wsh = null;

window.onerror = window.oldOnError;

</script>

//javascript/238