게시판 글작성 메인에서 가능한가요?

<form name="fwrite" id="fwrite" action="<?php echo G5_BBS_URL ?>/write_update.php" onsubmit="return fwrite_submit(this);" method="post">
  <input type="hidden" name="uid" value="<?php echo get_uniqid(); ?>">
  <input type="hidden" name="w" value="">
  <input type="hidden" name="bo_table" value="inquiry">
  
  <input type="text" name="wr_name" id="wr_name" required class="frm_input required" size="10" maxlength="255" placeholder="이름">
  <input type="text" name="wr_subject" id="wr_subject" required class="frm_input full_input required" size="50" maxlength="255" placeholder="제목">
  <input type="text" name="wr_content" id="wr_content" required class="frm_input full_input required" size="50" maxlength="255" placeholder="내용">
  <input type="text" name="wr_1" id="wr_1" required class="frm_input required" size="10" maxlength="255" placeholder="연락처">
  
  <div>
      <button type="submit" id="btn_submit" class="btn_submit btn">문의</button>
  </div>
</form>
<script>
function fwrite_submit(f) {
    if (confirm('문의하시겠습니까?'))
        return true;
    else 
        return false;
}
</script>

if ($bo_table != 'inquiry') {

    if ($is_guest && !chk_captcha()) {

        alert('자동등록방지 숫자가 틀렸습니다.');

    }

}