댓글로 달기에 너무 길어서 여기에 답을 남깁니다..
아래 처럼하면 될겁니다..
추가변경부분

같은 제목이 반복해서 나오는 이유는

highslide로 전환시 해당게시물의 변수가 넘어가지 않아서 입니다.

$capt=$list[$i][wr_id]; 를 설정하여

highslide로 전환시 해당게시물 변수전달함

기타 몇몇군데 수정..

그대로 적용하시면 됩니다.

적용예)
http://moaba.net/gb/bbs/board.php?bo_table=img_01

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

// 제목길이 잘 맞추세요.
$thumb_width = '100'; //썸네일 폭
$thumb_height = '80'; //썸네일 높이
$thumb_quality = '100'; //썸네일 퀄리티_100 이하

if (!function_exists("imagecopyresampled")) alert("GD 2.0.1 이상 버전이 설치되어 있어야 사용할 수 있는 갤러리 게시판 입니다.");

$data_path = $g4[path]."/data/file/$bo_table";
$thumb_path = $data_path.'/thumb';

@mkdir($thumb_path, 0707);
@chmod($thumb_path, 0707);

$mod = $board[bo_gallery_cols];
$td_width = (int)(100 / $mod);

// 선택옵션으로 인해 셀합치기가 가변적으로 변함
$colspan = 5;
if ($is_category) $colspan++;
if ($is_checkbox) $colspan++;
if ($is_good) $colspan++;
if ($is_nogood) $colspan++;

// 제목이 두줄로 표시되는 경우 이 코드를 사용해 보세요.
// <nobr style='display:block; overflow:hidden; width:000px;'>제목</nobr>

/*
$tmp_bo_table = "cm_gallery_request";
$tmp_write_table = $g4[write_prefix] . $tmp_bo_table;
$sql = " select wr_id, wr_subject from $tmp_write_table where wr_is_comment = 0 and wr_comment = 0 order by wr_id desc ";
$result = sql_query($sql);
for ($i=0; $row=sql_fetch_array($result); $i++)
{
echo "<div align=center><a href='$g4[bbs_path]/board.php?bo_table=$tmp_bo_table&wr_id=$row[wr_id]'><span style='height:18px; color:crimson; cursor:pointer;'>★ 이미지 요청 : $row[wr_subject] ★</span></a></div><br>";
}
*/
?>

<style type="text/css">
<!--
.data { font-family:돋움; font-size:8pt; color:#999999; }
-->
</style>
<!--
1 ) Reference to the file containing the javascript.
This file must be located on your server.
-->

<script type="text/javascript" src="<?=$board_skin_path?>/highslide/highslide.js"></script>


<!--
2) Initialize the hs object and optionally override the settings defined at the top
of the highslide.js file. The parameter hs.graphicsDir is important!
-->

<script type="text/javascript">

// remove the registerOverlay call to disable the controlbar
hs.registerOverlay(
{
thumbnailId: null,
overlayId: 'controlbar',
position: 'top right',
hideOnMouseOut: true
}
);

hs.graphicsDir = '<?=$board_skin_path?>/highslide/graphics/';
// hs.captionId = 'the-caption'; //고정변수 주석처리함.
hs.outlineType = 'rounded-white';
window.onload = function() {
hs.preloadImages(5);
}
</script>

<style type="text/css">
.highslide {
cursor: url(<?=$board_skin_path?>/highslide/graphics/zoomin.cur), pointer;
outline: none;
}
.highslide img {
border: 2px solid gray;
}
.highslide:hover img {
border: 2px solid white;
}

.highslide-image {
border: 2px solid white;
}
.highslide-image-blur {
}
.highslide-caption {
display: none;

border: 2px solid white;
border-top: none;
font-family: Verdana, Helvetica;
font-size: 10pt;
padding: 5px;
background-color: white;
}
.highslide-loading {
display: block;
color: white;
font-size: 9px;
font-weight: bold;
text-transform: uppercase;
text-decoration: none;
padding: 3px;
border-top: 1px solid white;
border-bottom: 1px solid white;
background-color: black;
/*
padding-left: 22px;
background-image: url(highslide/graphics/loader.gif);
background-repeat: no-repeat;
background-position: 3px 1px;
*/
}
a.highslide-credits,
a.highslide-credits i {
padding: 2px;
color: silver;
text-decoration: none;
font-size: 10px;
}
a.highslide-credits:hover,
a.highslide-credits:hover i {
color: white;
background-color: gray;
}

.highslide-move {
cursor: move;
}

.highslide-overlay {
display: none;
}
/* Controlbar example */
.controlbar {
background: url(<?=$board_skin_path?>/highslide/graphics/controlbar4.gif);
width: 167px;
height: 34px;
}
.controlbar a {
display: block;
float: left;
margin: 0px 0 0 4px;
height: 29px;
width: 34px;
}

/* Necessary for functionality */
.highslide-display-block {
display: block;
}
.highslide-display-none {
display: none;
}
</style>

</head>
<!-- 게시판 목록 시작 -->
<table width="<?=$width?>" align=center cellpadding=0 cellspacing=0><tr><td>

<!-- 분류 셀렉트 박스, 게시물 몇건, 관리자화면 링크 -->
<table width="100%" cellspacing="0" cellpadding="0">
<tr height="1">
<? if ($is_category) { ?><form name="fcategory" method="get">
<td width="50%"> </td>
</form><? } ?>
<td align="right"><? if ($rss_href) { ?><a href='<?=$rss_href?>'><img src='<?=$board_skin_path?>/img/btn_rss.gif' border=0 align=absmiddle></a><?}?>
<? if ($admin_href) { ?><?}?></td>
</tr>
<tr><td height=5></td></tr>
</table>

<form name="fboardlist" method="post" style="margin:0px;">
<input type="hidden" name="bo_table" value="<?=$bo_table?>">
<input type="hidden" name="sfl" value="<?=$sfl?>">
<input type="hidden" name="stx" value="<?=$stx?>">
<input type="hidden" name="spt" value="<?=$spt?>">
<input type="hidden" name="page" value="<?=$page?>">
<input type="hidden" name="sw" value="">
<table width=100% cellpadding=0 cellspacing=0 border=0>
<tr><td colspan='<?=$mod?>' height=2></td></tr>
<tr><td colspan='<?=$mod?>' height=20></td></tr>
<tr>
<?
for ($i=0; $i<count($list); $i++)
{
if ($i && $i%$mod==0)
echo "</tr><tr><td colspan='{$mod}' height=20></td></tr><tr>";
$img = "<img src='$board_skin_path/img/noimage.gif' border=0 title='이미지 없음'>";
$image = $list[$i][file][0][file];
//$thumb = $thumb_path.'/'.$list[$i][wr_id];
$thumb = $thumb_path.'/'.$list[$i][file][0][file];
if (!file_exists($thumb))
{
$file = $list[$i][file][0][path] .'/'. $list[$i][file][0][file];
if (preg_match("/\.(jp[e]?g|gif|png)$/i", $file) && file_exists($file))
{
$size = @getimagesize($file);
if ($size[2] == 1)
$src = imagecreatefromgif($file);
else if ($size[2] == 2)
$src = imagecreatefromjpeg($file);
else if ($size[2] == 3)
$src = imagecreatefrompng($file);
else
continue;

$rate = $thumb_width / $size[0];
$height = (int)($size[1] * $rate);

if ($height < $thumb_height)
$dst = imagecreatetruecolor($thumb_width, $height);
else
$dst = imagecreatetruecolor($thumb_width, $thumb_height);
/*imagecopyresampled($dst, $src, 0, 0, 0, 0, $thumb_width, $height, $size[0], $size[1]);
imagejpeg($dst, $thumb_path.'/'.$list[$i][file][0][file], $thumb_quality);
chmod($thumb_path.'/'.$list[$i][file][0][file], 0606);*/

imagecopyresampled($dst, $src, 0, 0, 0, 0, $thumb_width, $height, $size[0], $size[1]);
imagejpeg($dst, $thumb_path.'/'.$list[$i][file][0][file], $thumb_quality);
chmod($thumb_path.'/'.$list[$i][file][0][file], 0606);
imagejpeg($dst, $thumb_path.'/'.$list[$i][wr_id], $thumb_quality);
chmod($thumb_path.'/'.$list[$i][wr_id], 0606);
}
}
$capt=$list[$i][wr_id];//변수를 넘기기위한 설정

if (file_exists($thumb) && $list[$i][file][0][file]) {
$img = "<a href='$g4[path]/data/file/$bo_table/$image' id='caption_$list[$i]['wr_id']' class='highslide' onclick=\"return hs.expand(this, { captionId: 'caption_$capt'})\" ><img src='{$thumb}' width='{$thumb_width}' height='{$thumb_height}' border=0 style='border:0px solid #999999;'></a>";
} else {
preg_match("`<\s*img\s+src\s*=\s*['|\"]?([^'|\"\s]+://[^'|\"\s]+\.(gif|jpe?g|png))['|\"]?\s*[^>]+`i", $list[$i]['wr_content'], $images);

if (!empty($images[1])) {
$img_size = GetImageSize("$images[1]");
if($img_size[0] >= $img_size[1]) {
$imgper = $thumb_width/$img_size[0];
$thumb_height = $img_size[1]*$imgper;
}else{
$imgper = $thumb_height/$img_size[1];
$thumb_width = $img_size[0]*$imgper;
}

$img = "<a href='$g4[path]/data/file/$bo_table/$image' class='highslide' onclick=\"return hs.expand(this, { captionId: 'caption_$capt'})\" ><img src='{$images[1]}' width='{$thumb_width}' height='{$thumb_height}' align='absmiddle' border='0'></a>";
} else {
echo "";
}
}

$style = "";
if ($list[$i][icon_new])
$style = " style='font-weight:bold;' ";
$subject = "<a href='{$list[$i][href]}' onfocus='this.blur()'><span $style>".cut_str($list[$i][subject],100)."</span></a>";

$c_num = $mod-$i;

$comment_cnt = "";
if ($list[$i][comment_cnt])
$comment_cnt = " <a href=\"{$list[$i][comment_href]}\"><span style='font-size:7pt;'>{$list[$i][comment_cnt]}</span></a>";

$bg = ""; //새글?
if ($list[$i][icon_new])
$bg="thumb_1_2.gif";
else
$bg="thumb_1.gif";


echo "
<td width='{$td_width}%' valign=top style='word-break:break-all;'>\n";
echo "
<table width='150' cellpadding='0' cellspacing='0' border='0'>
\n";
echo "
<tr>
<td height='75' align='center' valign='top' style='padding:2 0 2 0;'>
<table border='0' align='center' cellpadding='0' cellspacing='0'>
<tr>
<td>$img</td>
</tr>
</table>
</td>
</tr>
\n";
// echo "
// <tr>
// <td align='center'>$subject</td>
// </tr>
// \n";
echo "
<tr>
<td class='small' align='center'>";
if ($is_checkbox) echo "
<input type=checkbox name=chk_wr_id[] value='{$list[$i][wr_id]}'>
";

echo "</td> <div class='highslide-caption' id='caption_$capt'>
$subject
</div>
</tr>
\n";
echo "
</table></td>
\n";

}

// 나머지 td
$cnt = $i%$mod;
if ($cnt)
for ($i=$cnt; $i<$mod; $i++)
echo "<td width='{$td_width}%'> </td>";
?>

</tr>
<tr><td colspan='<?=$mod?>' height=20></td></tr>
<tr><td colspan=<?=$mod?> height=1></td></tr>

<? if (count($list) == 0) { echo "<tr><td colspan='$mod' height=100 align=center>게시물이 없습니다.</td></tr>"; } ?>
<tr><td colspan=<?=$mod?> height=1>
</table>
</form>

<!-- 페이지 -->
<table width="100%" cellspacing="0" cellpadding="0">
<tr>
<td width="100%" align="center" height=30 valign=bottom>
<? if ($prev_part_href) { echo "<a href='$prev_part_href'><img src='$board_skin_path/img/btn_search_prev.gif' border=0 align=absmiddle title='이전검색'></a>"; } ?>
<?
// 기본으로 넘어오는 페이지를 아래와 같이 변환하여 이미지로도 출력할 수 있습니다.
//echo $write_pages;
$write_pages = str_replace("처음", "<img src='$board_skin_path/img/begin.gif' border='0' align='absmiddle' title='처음'>", $write_pages);
$write_pages = str_replace("이전", "<img src='$board_skin_path/img/prev.gif' border='0' align='absmiddle' title='이전'>", $write_pages);
$write_pages = str_replace("다음", "<img src='$board_skin_path/img/next.gif' border='0' align='absmiddle' title='다음'>", $write_pages);
$write_pages = str_replace("맨끝", "<img src='$board_skin_path/img/end.gif' border='0' align='absmiddle' title='맨끝'>", $write_pages);
$write_pages = preg_replace("/<span>([0-9]*)<\/span>/", "<b><font style=\"font-family:돋움; font-size:9pt; color:#797979\">$1</font></b>", $write_pages);
$write_pages = preg_replace("/<b>([0-9]*)<\/b>/", "<b><font style=\"font-family:돋움; font-size:9pt; color:orange;\">$1</font></b>", $write_pages);
?>
<?=$write_pages?>
<? if ($next_part_href) { echo "<a href='$next_part_href'><img src='$board_skin_path/img/btn_search_next.gif' border=0 align=absmiddle title='다음검색'></a>"; } ?>
</td>
</tr>
</table>

<!-- 버튼 링크 -->
<form name=fsearch method=get style="margin:0px;">
<input type=hidden name=bo_table value="<?=$bo_table?>">
<input type=hidden name=sca value="<?=$sca?>">
<table width=100% cellpadding=0 cellspacing=0>
<tr>
<td width="50%" height="40" valign="bottom">
<? if ($list_href) { ?><a href="<?=$list_href?>"><img src="<?=$board_skin_path?>/img/btn_list.gif" border="0"></a><? } ?>
<? if ($is_checkbox) { ?>
<a href="javascript:select_delete();"><img src="<?=$board_skin_path?>/img/btn_delete.gif" border="0"></a>
<a href="javascript:select_copy('copy');"><img src="<?=$board_skin_path?>/img/btn_select_copy.gif" border="0"></a>
<a href="javascript:select_copy('move');"><img src="<?=$board_skin_path?>/img/btn_select_move.gif" border="0"></a>
<? } ?> </td>
<td width="50%" align="right" valign="bottom">
<? if ($write_href) { ?><a href="<?=$write_href?>"><img src="<?=$board_skin_path?>/img/btn_write.gif" border="0"></a><? } ?> </td>


</tr>
</table>
</form>

</td></tr></table>
<script language="javascript">
function popupImage(imageURL){
imageHandle=open("","popupForImage","toolbar=no,location=no,status=no,manubar=no,scrollbars=no,resizable=no,width=100,height=100,top=0,left=0");
imageHandle.document.write("<title></title>");
imageHandle.document.write("<style>");
imageHandle.document.write("*{margin:0;padding:0;border:0;}");
imageHandle.document.write("</style>");
imageHandle.document.write("<img src=\""+imageURL+"\" onload=\"window.resizeTo(this.width+6,this.height+52);\" onclick=\"self.close();\" style=\"cursor:hand;\" title=\"클릭하면 닫힙니다.\">");
}
</script>
<script language="JavaScript">
if ("<?=$sca?>") document.fcategory.sca.value = "<?=$sca?>";
if ("<?=$stx?>") {
document.fsearch.sfl.value = "<?=$sfl?>";
document.fsearch.sop.value = "<?=$sop?>";
}
</script>

<? if ($is_checkbox) { ?>
<script language="JavaScript">
function all_checked(sw)
{
var f = document.fboardlist;

for (var i=0; i<f.length; i++) {
if (f.elements[i].name == "chk_wr_id[]")
f.elements[i].checked = sw;
}
}

function check_confirm(str)
{
var f = document.fboardlist;
var chk_count = 0;

for (var i=0; i<f.length; i++) {
if (f.elements[i].name == "chk_wr_id[]" && f.elements[i].checked)
chk_count++;
}

if (!chk_count) {
alert(str + "할 게시물을 하나 이상 선택하세요.");
return false;
}
return true;
}

// 선택한 게시물 삭제
function select_delete()
{
var f = document.fboardlist;

str = "삭제";
if (!check_confirm(str))
return;

if (!confirm("선택한 게시물을 정말 "+str+" 하시겠습니까?\n\n한번 "+str+"한 자료는 복구할 수 없습니다"))
return;

f.action = "./delete_all.php";
f.submit();
}

// 선택한 게시물 복사 및 이동
function select_copy(sw)
{
var f = document.fboardlist;

if (sw == "copy")
str = "복사";
else
str = "이동";

if (!check_confirm(str))
return;

var sub_win = window.open("", "move", "left=50, top=50, width=396, height=550, scrollbars=1");

f.sw.value = sw;
f.target = "move";
f.action = "./move.php";
f.submit();
}
</script>
<? } ?>
<!-- 게시판 목록 끝 -->