function checkForm(form) {
  if (form.email_name.value == "" ||form.email_name.value.length==0 ) {
    window.alert("请输入邮件账号名称!");
    form.email_name.focus();
    return false;
  }
  if (form.domain.value == "" ||form.domain.value.length==0 ) {
    window.alert("请输入邮件域名!");
    form.domain.focus();
    return false;
  }

  if (form.password.value == "") {
    window.alert("请输入密码!");
    form.password.focus();
    return false;
  }
  if (form.email_name.value.indexOf('@') < 0) {
    form.username.value = form.email_name.value + "@" + form.domain.value;
  } else {
    form.username.value = form.email_name.value;
  }
  if(form.username.value=="administrator"){
    form.action="../domain/adminlogin.jsp";
  }

  return true;
}