오류가 나는곳의 주소를 알려주시면 더 빠르고 정확하게 답변 받을 수 있습니다.

오류 주소 :

갤러리 탭 카테고리 분류는 나타 나는데여 해당카테고리 클릭하면.
변수가 선언되지 않았습니다. 에러가 뜨거든여...

여러 팁을 찾아보았지만 문제가 해결이 되지 않아 소스를 올려봅니다.
부탁드립니다.


<!-- 분류 셀렉트 박스, 게시물 몇건, 관리자화면 링크 -->
<? if ($is_category) { ?>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr align="center">
<?php
$arr = explode("|", $board[bo_category_list]);
$arr1 = explode("|", $board[bo_10]);
$str = "";
if(!$sca)
$str = "<td width='2'><img src='$board_skin_path/img/tab_on_notice_left.gif' height='29'></td>
<td background='$board_skin_path/img/tab_on_bg.gif' style='padding:4 15 0 15' nowrap>
<a href='board.php?bo_table=$bo_table'><b>전체</b></a></td>
<td width='2'><img src='$board_skin_path/img/tab_on_right.gif' height='29'></td>";
else
$str = "<td width='2'><img src='$board_skin_path/img/tab_off_notice_left.gif' height='29'></td>
<td background='$board_skin_path/img/tab_off_bg.gif' style='padding:4 15 0 15' nowrap>
<a href='board.php?bo_table=$bo_table'>전체</a></td>
<td width='2'><img src='$board_skin_path/img/tab_off_right.gif' height='29'></td>";
for ($i=0; $i<count($arr); $i++)
if (trim($arr[$i])){
if($arr[$i]==$sca){
$key = array_search($sca, $arr);
$cate = explode("^", $arr1[$key]);
$subca1 = $cate[0];
$str .= "<td width='2'><img src='$board_skin_path/img/tab_on_left.gif'></td>
<td background='$board_skin_path/img/tab_on_bg.gif' style='padding:4 15 0 15' nowrap>
<a href='$category_location$arr[$i]&sfl=wr_10&stx=$subca1&nca=$subca1'><b>$arr[$i]</b></a></td>
<td width='2'><img src='$board_skin_path/img/tab_on_right.gif'></td>";
}else{
$key = array_search($arr[$i], $arr);
$cate = explode("^", $arr1[$key]);
$subca1=$cate[0];
$str .= "<td width='2'><img src='$board_skin_path/img/tab_off_left.gif'></td>
<td background='$board_skin_path/img/tab_off_bg.gif' style='padding:4 15 0 15' nowrap>
<a href='$category_location$arr[$i]&sfl=wr_10&stx=$subca1&nca=$subca1'>$arr[$i]</a></td>
<td width='2'><img src='$board_skin_path/img/tab_off_right.gif''></td>";
}
}
echo $str;
echo "<td width='100%' background='$board_skin_path/img/tab_bg.gif' style='padding:4 0 0 15' nowrap valign='top'>";
?>
<div style="float:right;">
<img src="<?=$board_skin_path?>/img/icon_total.gif" align="absmiddle">
<span style="color:#888888; font-weight:bold;">Total <?=number_format($total_count)?></span>
<? if ($rss_href) { ?><a href='<?=$rss_href?>'><img src='<?=$board_skin_path?>/img/btn_rss.gif' border="0" align="absmiddle"></a><?}?>
<? if ($admin_href) { ?><a href="<?=$admin_href?>"><img src="<?=$board_skin_path?>/img/btn_admin.gif" title="관리자" align="absmiddle"></a><?}?>
</div>
</td>
</tr>
</table>
<? } else { ?>

<div style="float:right;">
<img src="<?=$board_skin_path?>/img/icon_total.gif" align="absmiddle">
<span style="color:#888888; font-weight:bold;">Total <?=number_format($total_count)?></span>
<? if ($rss_href) { ?><a href='<?=$rss_href?>'><img src='<?=$board_skin_path?>/img/btn_rss.gif' border="0" align="absmiddle"></a><?}?>
<? if ($admin_href) { ?><a href="<?=$admin_href?>"><img src="<?=$board_skin_path?>/img/btn_admin.gif" title="관리자" align="absmiddle"></a><?}?>
</div>
<? } ?>