text: function validate_abook_simple()	 {
  
  if(!document.abook.UserEmail.value)	{
  alert('請輸入電子郵件地址的通訊錄條目.');
  document.abook.UserEmail.focus();
  return false;
  }
  
  document.abook.submit();
  
  }
  
  function validate_abook()	 {
  
  if(!document.abook.UserFirstName.value)	{
  alert('請輸入值為\“First Name\”字段.');
  ChangeTab('0');
  document.abook.UserFirstName.focus();
  return false;
  }
  
  if(!document.abook.UserLastName.value)	{
  alert('請輸入值為\“\Last Name”字段.');
  ChangeTab('0');
  document.abook.UserLastName.focus();
  return false;
  }
  
  if(!document.abook.UserEmail.value)	{
  alert('請輸入電子郵件地址的通訊錄條目.');
  ChangeTab('0');
  document.abook.Email.focus();
  return false;
  }
  
  if(!document.abook.WriteSelectedUsers.value && !document.abook.WriteSelectedGroups.value && ( document.abook.ReadSelectedUsers.value || document.abook.ReadSelectedGroups.value ) )	{
  
  	alert('至少有一個用戶或組必須具有讀/寫訪問的地址簿條目');
  	ChangeTab('4');
  	return false;
  }
  
  document.body.style.cursor = 'wait';
  return true;
  
  }