그누보드5 검색바 질문.

<form name="fsearchbox" method="get" action="<?php echo G5_BBS_URL ?>/search.php" onsubmit="return fsearchbox_submit(this);">
                <input type="hidden" name="sfl" value="wr_subject||wr_content">
                <input type="hidden" name="sop" value="and">
                <label for="sch_stx" class="sound_only">검색어 필수</label>
                <input type="text" name="stx" id="sch_stx" maxlength="20" placeholder="검색어를 입력해주세요">
                <button type="submit" id="sch_submit" value="검색"><i class="fa fa-search" aria-hidden="true"></i><span class="sound_only">검색</span></button>
                </form>