<select name="category">
<optgroup label="diary">
<option value="story" selected="selected">스토리</option>
<option value="travel">여행</option>
<option value="movie">영화</option>
</optgroup>
<optgroup label="scrap">
<option value="food">음식</option>
<option value="photo">사진</option>
<option value="news">뉴스</option>
</optgroup>
</select>