function ajax_chkname()
{
$_str_adminName = fn_getSafe(fn_get("admin_name"), "txt", "");
$_num_adminId = fn_getSafe(fn_get("admin_id"), "int", 0);
$_arr_adminRow = $this->mdl_admin->mdl_read($_str_adminName, "admin_name", $_num_adminId);
if ($_arr_adminRow["alert"] == "y020102") {
$this->obj_ajax->halt_re("x020204");
}
$arr_re = array("re" => "ok");
exit(json_encode($arr_re));
}