<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어1</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'>
  <? if ($is_category) { ?>
  <select name=ca_name required itemname="분류" onChange="category_data(this,'wr_10');">
            <option value="">선택하세요<?=$category_option?>
        </select></td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어2</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><select name="wr_10">
            <option value="">선택하세요</option>
        </select></td>
</tr>
<? } ?>
이게 원 소스입니다.
여분필드를 이용해서 다중카테고리를 사용한 게시판입니다.

<<?
if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가

include_once "$board_skin_path/skin.lib.php";

if ($is_category) {
    $nc_category_location  = "./board.php?bo_table=$bo_table&sca=$sca&sfl=wr_10&stx=";
    $nc_category_option    = get_nc_category_option($bo_table, $sca);
}

$wr_10 = $write[wr_10];
?>
<script id="dynamic"></script>
<script language="javascript">
// 글자수 제한
var char_min = parseInt(<?=$write_min?>); // 최소
var char_max = parseInt(<?=$write_max?>); // 최대

function category_data(sel,target) {
var sca    = sel.options[sel.selectedIndex].value; // 첫번째 selectbox의 선택된 텍스트
var form    = sel.form.name;
dynamic.src = "<?=$board_skin_path?>/category.data.php?bo_table=<?=$bo_table?>&form=" + form + "&sca=" + sca + "&target=" + target;
}
</script>
<style type="text/css">
<!--
.style3 {color: #7BB41F; font-weight: bold; }
.ddoni {color: red; font-weight: bold; }
-->
</style>

<form name="fwrite" method="post" action="javascript:fwrite_check(document.fwrite);" enctype="multipart/form-data" style="margin:0px;">
<input type=hidden name=null><!-- 삭제하지 마십시오. -->
<input type=hidden name=w        value="<?=$w?>">
<input type=hidden name=bo_table value="<?=$bo_table?>">
<input type=hidden name=wr_id    value="<?=$wr_id?>">
<input type=hidden name=sfl      value="<?=$sfl?>">
<input type=hidden name=stx      value="<?=$stx?>">
<input type=hidden name=spt      value="<?=$spt?>">
<input type=hidden name=sst      value="<?=$sst?>">
<input type=hidden name=sod      value="<?=$sod?>">
<input type=hidden name=page    value="<?=$page?>">

<table width="<?=$width?>" align=center cellpadding=1 cellspacing=1 bordercolor="#BCDB89" bgcolor="#BCDB89">
  <tr><td>

<table width="100%" border="0" cellspacing="1" cellpadding="1">
<tr><td colspan=4 height=1 bgcolor=#DDDDDD></td></tr>
<tr><td style='padding-left:300px' colspan=4 height=38 bgcolor=#f8f8f9><strong>매물 등록하기<!--<?=$title_msg?>!--></strong>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;* 빨간표시는 필수입력사항입니다.</td></tr>
<? if ($is_name) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 이름</span></td>
    <td colspan="3"><input class=ed maxlength=20 size=15 name=wr_name itemname="이름" required value="<?=$name?>"></td></tr>
<tr bgcolor="#FFFFFF"><td colspan=4 height=1></td>
</tr>
<? } ?>

<? if ($is_password) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 패스워드</span></td>
    <td colspan="3"><input class=ed type=password maxlength=20 size=15 name=wr_password itemname="패스워드" <?=$password_required?>></td></tr>
<tr bgcolor="#FFFFFF"><td colspan=4 height=1></td>
</tr>
<? } ?>

<? if ($is_email) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 이메일</span></td>
    <td colspan="3"><input class=ed maxlength=100 size=50 name=wr_email email itemname="이메일" value="<?=$email?>"></td></tr>
<? } ?>
<!--
<tr bgcolor="#FFFFFF">
    <td width=131 bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 옵션</span></td>
    <td colspan="3"><? if ($is_notice) { ?>
      <input type=checkbox name=notice value="1" <?=$notice_checked?>>공지&nbsp;<? } ?>
        <? if ($is_html) { ?><input onclick="html_auto_br(this);" type=checkbox value="<?=$html_value?>" name="html" <?=$html_checked?>><span class=w_title>html</span>&nbsp;<? } ?>
        <? if ($is_secret) { ?><input type=checkbox value="secret" name="secret" <?=$secret_checked?>><span class=w_title>비밀글</span>&nbsp;<? } ?>
        <? if ($is_mail) { ?><input type=checkbox value="mail" name="mail" <?=$recv_email_checked?>>답변메일받기&nbsp;<? } ?></td></tr>
!-->
<tr bgcolor="#FFFFFF">
    <td width=80 bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 제목</span></td>
    <td colspan="3" bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed style="width:60%;" name=wr_subject itemname="제목" required value="<?=$subject?>"></td></tr>
<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어1</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'>
  <? if ($is_category) { ?>
  <select name=ca_name required itemname="분류" onChange="category_data(this,'wr_10');">
            <option value="">선택하세요<?=$category_option?>
        </select>
</td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어2</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><select name="wr_10">
        <?
if ($wr_10){
echo "<option selected value='$wr_10'>$wr_10</option>";
} else {
echo "<option selected value=''>선택하세요</option>";
}
?>
           
        </select></td>
</tr>
<? } ?>
<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어3</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'> <select name="wr_18">
  <option value="">선택하세요</option>
  <option value='서울'<? if($write[wr_18]=="서울") echo 'selected'; ?>>서울</option>
  <option value='경기'<? if($write[wr_18]=="경기") echo 'selected'; ?>>경기</option>
  <option value='인천'<? if($write[wr_18]=="인천") echo 'selected'; ?>>인천</option>
  <option value='강원'<? if($write[wr_18]=="강원") echo 'selected'; ?>>강원</option>
  <option value='충남'<? if($write[wr_18]=="충남") echo 'selected'; ?>>충남</option>
  <option value='대전'<? if($write[wr_18]=="대전") echo 'selected'; ?>>대전</option>
  <option value='충북'<? if($write[wr_18]=="충북") echo 'selected'; ?>>충북</option>
  <option value='부산'<? if($write[wr_18]=="부산") echo 'selected'; ?>>부산</option>
  <option value='울산'<? if($write[wr_18]=="울산") echo 'selected'; ?>>울산</option>
  <option value='대구'<? if($write[wr_18]=="대구") echo 'selected'; ?>>대구</option>
  <option value='경북'<? if($write[wr_18]=="경북") echo 'selected'; ?>>경북</option>
  <option value='경남'<? if($write[wr_18]=="경남") echo 'selected'; ?>>경남</option>
  <option value='전남'<? if($write[wr_18]=="전남") echo 'selected'; ?>>전남</option>
  <option value='광주'<? if($write[wr_18]=="광주") echo 'selected'; ?>>광주</option>
  <option value='전북'<? if($write[wr_18]=="전북") echo 'selected'; ?>>전북</option>
  <option value='제주'<? if($write[wr_18]=="제주") echo 'selected'; ?>>제주</option>
  </select>



<!--
 
 
  <select name="wr_18">
<option value="">선택하세요</option>
<option value="서울">서울</option>
<option value="경기">경기</option>
<option value="인천">인천</option>
<option value="강원">강원</option>
<option value="충남">충남</option>
<option value="대전">대전</option>
<option value="충북">충북</option>
<option value="부산">부산</option>
<option value="울산">울산</option>
<option value="대구">대구</option>
<option value="경북">경북</option>
<option value="경남">경남</option>
<option value="전남">전남</option>
<option value="광주">광주</option>
<option value="전북">전북</option>
<option value="제주">제주</option>
</select><br>거주 지역을 선택하세요!--></td>
  </td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'>· 가격</td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_1 itemname="검색어4" value="<?=$write[wr_1]?>">만원<span class=ddoni><br>매매광고시 가격을 반드시 입력해주세요</span></td>
</tr>
<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어5</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_3 itemname="검색어5" required value="<?=$write[wr_3]?>"></td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어6</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_4 itemname="검색어6" required value="<?=$write[wr_4]?>"></td>
</tr>
<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 검색어7</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_5 itemname="검색어7" required value="<?=$write[wr_5]?>"></td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 검색어8</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_6 itemname="검색어8" value="<?=$write[wr_6]?>"></td>
</tr>
<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 검색어9</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_7 itemname="검색어9" value="<?=$write[wr_7]?>"></td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 검색어10</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_8 itemname="검색어10" value="<?=$write[wr_8]?>"></td>
</tr>
<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 검색어11</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_9 itemname="검색어11" value="<?=$write[wr_9]?>"></td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 검색어12</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=20 size=15 name=wr_11 itemname="검색어12" value="<?=$write[wr_11]?>"></td>
</tr>

<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 홈페이지</span></td>
    <td colspan="3" style='padding-left:20px;'><input class=ed size=50 name=wr_2 itemname="홈페이지" value="<?=$write[wr_2]?>"> **운영중인 홈페이지가 있으시면 적어주세요</td></tr>

<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="ddoni">· 연락처1 </span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=3 size=5 name=wr_12 itemname="연락처"required value="<?=$write[wr_12]?>"> - <input class=ed maxlength=4 size=5 name=wr_13 itemname="연락처"required  value="<?=$write[wr_13]?>"> - <input class=ed maxlength=4 size=5 name=wr_14 itemname="연락처"required value="<?=$write[wr_14]?>"></td>
  <td width="90" bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 연락처2</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;'><input class=ed maxlength=3 size=5 name=wr_15 itemname="연락처"  value="<?=$write[wr_15]?>"> - <input class=ed maxlength=4 size=5 name=wr_16 itemname="연락처"  value="<?=$write[wr_16]?>"> - <input class=ed maxlength=4 size=5 name=wr_17 itemname="연락처" value="<?=$write[wr_17]?>"></td>
</tr>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px;'><span class="style3">· 상세설명</span></td>
    <td colspan="3"  style='padding-left:20px;'>
        <table width=90% cellpadding=0 cellspacing=0>
        <tr>
            <td width=50% align=left valign=bottom>
                <span style="cursor: pointer;" onclick="textarea_decrease('wr_content', 10);"><img src="<?=$board_skin_path?>/img/up.gif"></span>
                <span style="cursor: pointer;" onclick="textarea_original('wr_content', 10);"><img src="<?=$board_skin_path?>/img/start.gif"></span>
                <span style="cursor: pointer;" onclick="textarea_increase('wr_content', 10);"><img src="<?=$board_skin_path?>/img/down.gif"></span></td>
            <td width=50% align=right><? if ($write_min || $write_max) { ?><span id=char_count></span>글자<?}?></td>
        </tr>
        </table>
        <textarea id=wr_content name=wr_content class=tx style='width:100%; word-break:break-all;' rows=20 itemname="상세설명" 
        <? if ($write_min || $write_max) { ?>onkeyup="check_byte('wr_content', 'char_count');"<?}?>><?=$content?></textarea>
        <? if ($write_min || $write_max) { ?><script language="javascript"> check_byte('wr_content', 'char_count'); </script><?}?></td>
</tr>

<? if ($is_link) { ?>
<? for ($i=1; $i<=$g4[link_count]; $i++) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 링크 #
      <?=$i?>
    </span></td>
    <td colspan="3" style='padding-left:20px;'><input type='text' class=ed size=50 name='wr_link<?=$i?>' itemname='링크 #<?=$i?>' value='<?=$write["wr_link{$i}"]?>'></td>
</tr>
<? } ?>
<? } ?>

<tr bgcolor="#FFFFFF">
  <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><span class="style3">· 주의사항</span></td>
  <td bgcolor="#FFFFFF" style='padding-left:20px;' colspan=3><span class=ddoni>*사진 등록시 유의사항사진 등록시 유의사항사진 등록시 유의사항사진 등록시 유의사항<br>
1.사진 사이즈는500(가로)x400(세로)으로 등록해 주세요<br>2.사진 설명은 20자 이내로 작성해 주세요</span></td>
</tr>


<? if ($is_file) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'><table cellpadding=0 cellspacing=0><tr><td bgcolor="#EDF6E0"><span class="style3">· 파일</span> <span onclick="add_file();" style='cursor:pointer; font-family:tahoma; font-size:12pt;'><img src="<?=$board_skin_path?>/img/pl.gif" border="0"></span> <span onclick="del_file();" style='cursor:pointer; font-family:tahoma; font-size:12pt;'><img src="<?=$board_skin_path?>/img/mi.gif" border="0"></span></td>
    </tr>
    </table></td>
    <td colspan="3"  style='padding-left:20px;'><table id="variableFiles" cellpadding=0 cellspacing=0></table><?// print_r2($file); ?>
        <script language="JavaScript">
        var flen = 0;
        function add_file(delete_code)
        {
            var upload_count = <?=(int)$board[bo_upload_count]?>;
            if (upload_count && flen >= upload_count)
            {
                alert("이 게시판은 "+upload_count+"개 까지만 파일 업로드가 가능합니다.");
                return;
            }

            var objTbl;
            var objRow;
            var objCell;
            if (document.getElementById)
                objTbl = document.getElementById("variableFiles");
            else
                objTbl = document.all["variableFiles"];

            objRow = objTbl.insertRow(objTbl.rows.length);
            objCell = objRow.insertCell(0);

            objCell.innerHTML = "<input type='file' class=ed size=32 name='bf_file[]' title='파일 용량 <?=$upload_max_filesize?> 이하만 업로드 가능'>";
            if (delete_code)
                objCell.innerHTML += delete_code;
            else
            {
                <? if ($is_file_content) { ?>
                objCell.innerHTML += "<br><input type='text' class=ed size=50 name='bf_content[]' title='업로드 이미지 파일에 해당 되는 내용을 입력하세요.'>";
                <? } ?>
                ;
            }

            flen++;
        }

        <?=$file_script; //수정시에 필요한 스크립트?>

        function del_file()
        {
            // file_length 이하로는 필드가 삭제되지 않아야 합니다.
            var file_length = <?=(int)$file_length?>;
            var objTbl = document.getElementById("variableFiles");
            if (objTbl.rows.length - 1 > file_length)
                objTbl.deleteRow(objTbl.rows.length - 1);
        }
        </script></td>
</tr>
<tr bgcolor="#FFFFFF"><td colspan=4 height=1></td>
</tr>
<? } ?>

<? if ($is_trackback) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'>· 트랙백주소</td>
    <td colspan="3"><input class=ed size=50 name=wr_trackback itemname="트랙백" value="<?=$trackback?>">
        <? if ($w=="u") { ?><input type=checkbox name="re_trackback" value="1">핑 보냄<? } ?></td>
</tr>
<? } ?>

<? if ($is_norobot) { ?>
<tr bgcolor="#FFFFFF">
    <td bgcolor="#EDF6E0" style='padding-left:20px; height:30px;'>· <?=$norobot_str?></td>
    <td colspan="3"><input class=ed type=input size=10 name=wr_key itemname="자동등록방지" required>&nbsp;&nbsp;* 왼쪽의 글자중 <font color="red">빨간글자만</font> 순서대로 입력하세요.</td>
</tr>
<? } ?>
</table>

<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
    <td width="100%" height="30" background="<?=$board_skin_path?>/img/write_down_bg.gif" bgcolor="#FFFFFF"></td>
</tr>
<tr>
    <td width="100%" align="center" valign="top" bgcolor="#FFFFFF">
        <input type=image id="btn_submit" src="<?=$board_skin_path?>/img/btn_write.gif" border=0 accesskey='s'>&nbsp;
        <a href="./board.php?bo_table=<?=$bo_table?>"><img id="btn_list" src="<?=$board_skin_path?>/img/btn_list.gif" border=0></a></td>
</tr>
</table>

</td></tr></table>

</form>


<script language="javascript">
<?
// 관리자라면 분류 선택에 '공지' 옵션을 추가함
if ($is_admin)
{
    echo "
    if (typeof(document.fwrite.ca_name) != 'undefined')
    {
        document.fwrite.ca_name.options.length += 1;
        document.fwrite.ca_name.options[document.fwrite.ca_name.options.length-1].value = '공지';
        document.fwrite.ca_name.options[document.fwrite.ca_name.options.length-1].text = '공지';
    }";
}
?>

with (document.fwrite) {
    if (typeof(wr_name) != "undefined")
        wr_name.focus();
    else if (typeof(wr_subject) != "undefined")
        wr_subject.focus();
    else if (typeof(wr_content) != "undefined")
        wr_content.focus();

    if (typeof(ca_name) != "undefined")
        if (w.value == "u")
            ca_name.value = "<?=$write[ca_name]?>";
}

function html_auto_br(obj)
{
    if (obj.checked) {
        result = confirm("자동 줄바꿈을 하시겠습니까?\n\n자동 줄바꿈은 게시물 내용중 줄바뀐 곳을<br>태그로 변환하는 기능입니다.");
        if (result)
            obj.value = "html2";
        else
            obj.value = "html1";
    }
    else
        obj.value = "";
}

function fwrite_check(f)
{
    var s = "";
    if (s = word_filter_check(f.wr_subject.value)) {
        alert("제목에 금지단어('"+s+"')가 포함되어있습니다");
        return;
    }

    if (s = word_filter_check(f.wr_content.value)) {
        alert("내용에 금지단어('"+s+"')가 포함되어있습니다");
        return;
    }

    if (char_min > 0 || char_max > 0)
    {
        var cnt = parseInt(document.getElementById('char_count').innerHTML);
        if (char_min > 0 && char_min > cnt)
        {
            alert("내용은 "+char_min+"글자 이상 쓰셔야 합니다.");
            return;
        } else if (char_max > 0 && char_max < cnt)
        {
            alert("내용은 "+char_max+"글자 이하로 쓰셔야 합니다.");
            return;
        }
    }

    if (typeof(f.wr_key) != "undefined") {
        if (hex_md5(f.wr_key.value) != md5_norobot_key) {
            alert("자동등록방지용 빨간글자가 순서대로 입력되지 않았습니다.");
            f.wr_key.focus();
            return;
        }
    }

    f.action = "./write_update.php";
    f.submit();
}
</script>

이것이 지금 사용하고있는 write.skin.php파일 입니다.