동영상 게시판인데 글쓰기만 누르면 '개체가 필요합니다'란 에러가 뜨고 다음 단계로 가질 않습니다.
에러 에 대한 정보를 보았을 때 자바스크립트 때문인 것 같은 어디가 문제인지 모르겠어요

<!--------script language="JavaScript" type="text/javascript" src="/alditor/alditor.js"></script>-------->
<?
if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가
?>

<script language="javascript">
// 글자수 제한
var char_min = parseInt(<?=$write_min?>); // 최소
var char_max = parseInt(<?=$write_max?>); // 최대
</script>

<!-- 김선용 2005.4 - ff(불여우) 에서는 innerhtml 사용시 폼이 <table> 아래에 있으면 인식하지 못합니다. -->
<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="<?=$wr_id?>">
<input type=hidden name=sca      value="<?=$sca?>">
<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?>">
<input type=hidden name=wr_9    value="<?=$write[wr_9]?>"> <?//★평점주기관련?>
<? if ($w == 'u') {?>
    <input type=hidden name=wr_1    value="<?=$write[wr_1]?>">
    <input type=hidden name=wr_2    value="<?=$write[wr_2]?>">
    <input type=hidden name=wr_3    value="<?=$write[wr_3]?>">
    <input type=hidden name=wr_4    value="<?=$write[wr_4]?>">
    <? }?>


<table width="<?=$width?>" align=center cellpadding=0 cellspacing=0><tr><td>

<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr><td colspan=2 height=2 bgcolor=#b0adf5></td></tr>
<tr><td style='padding-left:20px' colspan=2 height=38 bgcolor=#f8f8f9><strong><?=$title_msg?></strong></td></tr>

<? if ($is_name) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· 이름</td>
    <td><input class=ed maxlength=20 size=15 name=wr_name itemname="이름" required value="<?=$name?>"></td></tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<? if ($is_password) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· 패스워드</td>
    <td><input class=ed type=password maxlength=20 size=15 name=wr_password itemname="패스워드" <?=$password_required?>></td></tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<? if ($is_email) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· 이메일</td>
    <td><input class=ed maxlength=100 size=50 name=wr_email email itemname="이메일" value="<?=$email?>"></td></tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<? if ($is_homepage) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· 홈페이지</td>
    <td><input class=ed size=50 name=wr_homepage itemname="홈페이지" value="<?=$homepage?>"></td></tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<tr>
    <td width=120 style='padding-left:20px; height:30px;'>· 옵션</td>
    <td><? 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><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>

<? if ($is_category) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· 분류</td>
    <td><select name=ca_name required itemname="분류"><option value="">선택하세요<?=$category_option?></select></td></tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 제목</td>
    <td><input class=ed style="width:100%;" name=wr_subject itemname="제목" required value="<?=$subject?>"></td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 감독</td>
    <td><input class=ed style="width:100%;" name=wr_1 itemname="감독" required value="<?=$write[wr_1]?>"></td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 출연</td>
    <td><input class=ed style="width:100%;" name=wr_2 itemname="출연" required value="<?=$write[wr_2]?>"></td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 장르/기타</td>
    <td><input class=ed style="width:100%;" name=wr_3 itemname="장르/기타" required value="<?=$write[wr_3]?>"></td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 제작국가</td>
    <td><input class=ed style="width:20%;" name=wr_10 itemname="제작국가" required value="<?=$write[wr_10]?>"></td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 개봉일</td>
    <td><input class=ed style="width:20%;" name=wr_4 itemname="개봉일" required value="<?=$write[wr_4]?>">&nbsp;(형식 : 2003-02-09)</td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 상영시간</td>
    <td><input class=ed style="width:20%;" name=wr_6 itemname="상영시간" required value="<?=$write[wr_6]?>">&nbsp;(단위 : 분)</td>
</tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 홈페이지</td>
    <td><input class=ed style="width:40%;" name=wr_7 itemname="홈페이지" required value="<?=$write[wr_7]?>">&nbsp;(형식 : xxxx.xxx.xxx)</td>
</tr>

<tr>
    <td style='padding-left:20px; height:30px;' width=140>· 관람등급</td>
    <td><? 
$wr_5_array = array( 
 "$board_skin_path/img/all.gif" =>"전체관람가", 
 "$board_skin_path/img/12.gif" =>"만 12세이상관람가", 
 "$board_skin_path/img/15.gif" =>"만 15세이상관람가",
 "$board_skin_path/img/18.gif" =>"만 18세이상관람가",
 "$board_skin_path/img/n.gif" =>"미개봉",);reset($wr_5_array); 
?> 
<?$w_wr_5=$write[wr_5];?> 
<select class='ed' name=wr_5 itemname='관람등급' required> 
      <?if($write[wr_5] ==''){?> 
      <option value="<?echo"선택";?>" selected><?echo"선택";?></option> 
  <?}else{?> 
  <option value="<?echo"$write[wr_5]";?>" selected>     
  <?echo"$wr_5_array[$w_wr_5]";?> 
  </option><?}?> 
  <? 
  while (list($key,$value)=each($wr_5_array)) { 
  echo "<option value='$key'>$value</option>";} 
  ?> 
</select> </td>
</tr>

<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<tr>
    <td style='padding-left:20px;' width=140>· 줄거리및기타내용</td>
    <td style='padding:5 0 5 0;'>
        <table width=100% 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 || $write_max) { ?><span id=char_count></span>글자<?}?></td>
        </tr>
        </table>
        <textarea id=wr_content name=wr_content class=tx style='width:100%; word-break:break-all;' rows=20 itemname="내용" required
        <? if ($write_min || $write_max) { ?>onkeyup="check_byte('wr_content', 'char_count');"<?}?>><?=$content?></textarea>
        <? if ($write_min || $write_max) { ?><script language="javascript"> check_byte('wr_content', 'char_count'); </script><?}?></td>
</tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<tr>
<? if ($is_link) { ?>
    <td colspan=2><table width="100%" cellpadding="0" >

  <tr><td rowspan="9" width=140 style='padding-left:20px; height:30px;'><font color='red'>· 맞는 형식을 하나만 <br>&nbsp;&nbsp;선택하여 동영상을 <br>&nbsp;&nbsp;올려 주세요</font></td><td></td></tr>
 
                          <tr><td> ① 링크HTML태그: &nbsp; Mncast,판도라TV,YouTube,Aura,Daum,MBOx등등의 외부링크태그를 제공하는 모든 사이트<font color='blue'><br>(예 &lt;object&gt;&lt;/object&gt; 또는 &lt;embed src='...'&lt;/embed&gt;또는 &lt;iframe src='...'&lt;/iframe&gt;) 등으로 제공되는 태그를 복사해서 아래에 붙이세요.단,넓이와 높이는 각각100%로 수정해 주세요.(width="100%",height="100%")</font></td></tr>
                            <tr>
           
            <tr>
            <!-- <td><input type='text' class=ed style="width:100%;" name='wr_link1' itemname='링크 ' value='<?=$write['wr_link1']?>'></td> -->
            </tr>
            <tr>
  <td><textarea class=ed style="width:100%; word-break:break-all;" id='wr_link1' name='wr_link1' itemname='링크' rows=5><?=$write['wr_link1']?></textarea></td>
          </tr>


<tr><td>② 동영상링크: &nbsp; 일반미디어 동영상 파일(wmv,asf등),플래시(swf)파일등 <font color='blue'>(예 http://xxx.com/xxx.wmv)</font></td></tr>
                            <tr><td> <input type='text'style="width:100%; word-break:break-all;" size=120 name='wr_link2' itemname='링크' value='<?=$write["wr_link2"]?>'></td>
  </tr>
  <tr><td>③ FLV링크: &nbsp; FLV파일 <font color='blue'>(예 http://xxx.com/xxx.flv)</font></td></tr>
                            <tr><td> <input type='text'style="width:100%; word-break:break-all;" size=120 name='wr_8'' itemname='링크' value='<?=$write['wr_8']?>'></td>
  </tr>
                        </table></td>
<? } ?>
  </tr>

<? if ($is_file) { ?>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<tr>
    <td style='padding-left:20px; height:30px;' width=140><table cellpadding=0 cellspacing=0><tr><td style=" padding-top: 10px;">· 파일 <span onclick="add_file();" style='cursor:pointer; font-family:tahoma; font-size:12pt;'>+</span> <span onclick="del_file();" style='cursor:pointer; font-family:tahoma; font-size:12pt;'>-</span></td></tr></table></td>
    <td style='padding:5 0 5 0;'><table id="variableFiles" cellpadding=0 cellspacing=0></table><?// print_r2($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);
                flen--;
            }
        }
        </script></td>
</tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<? if ($is_trackback) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· 트랙백주소</td>
    <td><input class=ed size=50 name=wr_trackback itemname="트랙백" value="<?=$trackback?>">
        <? if ($w=="u") { ?><input type=checkbox name="re_trackback" value="1">핑 보냄<? } ?></td>
</tr>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<? if ($is_norobot) { ?>
<tr>
    <td style='padding-left:20px; height:30px;'>· <?=$norobot_str?></td>
    <td><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>
<tr><td colspan=2 height=1 bgcolor=#e7e7e7></td></tr>
<? } ?>

<tr><td colspan=2 height=1 bgcolor=#000000></td></tr>
</table>

<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
    <td width="100%" height="30" background="<?=$board_skin_path?>/img/write_down_bg.gif"></td>
</tr>
<tr>
    <td width="100%" align="center" valign="top">
        <input type=image id="btn_submit" src="<?=$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;
        }
    }

    document.getElementById('btn_submit').disabled = true;
    document.getElementById('btn_list').disabled = true;

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