Merge branch 'master' of github.com:gnuboard/g5 into renewal5

adm/menu_form.php

@@ -8,6 +8,8 @@ if ($is_admin != 'super')
 $g5['title'] = '메뉴 추가';
 include_once(G5_PATH.'/head.sub.php');
 
+$code = isset($code) ? preg_replace('/[^0-9a-zA-Z]/', '', strip_tags($code)) : '';
+
 // 코드
 if($new == 'new' || !$code) {
     $code = base_convert(substr($code,0, 2), 36, 10);