언제나 사용이 즐거운 Kboard 를 잘 사용하고 있습니다.

워드프레스 게시판 KBoard 퓨어 갤러리 스킨에 관련된 문의입니다.

http://severancetu.or.kr/sympathize/ 

링크에서 보여지는 썸네일을 크기글 변경하고 싶은데요.

썸네일을 이미지의 비율을 2:3 으로 하고 싶은데요

list.js 에서 

아래 처럼 바꾸고

 86줄       var item_width = jQuery('.kboard-list-item', this).width();
        jQuery('.kboard-list-item .kboard-list-thumbnail', this).css({'height':item_width+'px'});
    });
}

아래처럼 바꾸니까 이미지가 넘쳐나 버리는 데요
	jQuery('.kboard-list-item .kboard-list-thumbnail', this).css({'height':(item_width*1.3)+'px'});

2:3 정도 원본 비율을 유지하려면 어찌 하는지 문의드려요

lsit.php 에서   getThumbnail(500, 500) 을 getThumbnail(344, 500) 로 바꾸고

	<!-- 리스트 시작 -->
	<ul class="kboard-pure-gallery-list">
		<?php while($content = $list->hasNextNotice()):?>
		<li class="kboard-list-item<?php if($content->uid == kboard_uid()):?> kboard-list-selected<?php endif?>">
			<a href="<?php echo $url->getDocumentURLWithUID($content->uid)?>#kboard-document">
				<div class="kboard-list-thumbnail">
					<?php if($content->getThumbnail(344, 500)):?>
					<div class="kboard-list-thumbnail-child" style="background-image:url(<?php echo $content->getThumbnail(344, 500)?>)"></div>
					<?php endif?>
					<?php if(isset($content->attach->over_image)):?>
					<div class="kboard-list-thumbnail-over-background"></div>
					<div class="kboard-list-thumbnail-over-image"><img src="<?php echo site_url($content->attach->over_image[0])?>" alt=""></div>
					<?php endif?>
				</div>
				<div class="kboard-list-notice"><span class="kboard-pure-gallery-new-notify"><?php echo __('Notice', 'kboard')?></span></div>
				<div class="kboard-list-title"><div class="kboard-pure-gallery-cut-strings">
					<?php if($content->secret):?><img src="<?php echo $skin_path?>/images/icon-lock.png" class="kboard-icon-lock" alt="<?php echo __('Secret', 'kboard')?>"><?php endif?>
					<?php echo $content->title?>
				</div></div>
				<div class="kboard-list-user"><?php echo $content->getUserDisplay()?></div>
			</a>
		</li>
		<?php endwhile?>
		<?php while($content = $list->hasNext()):?>
		<li class="kboard-list-item<?php if($content->uid == kboard_uid()):?> kboard-list-selected<?php endif?>">
			<a href="<?php echo $url->getDocumentURLWithUID($content->uid)?>#kboard-document">
				<div class="kboard-list-thumbnail">
					<?php if($content->getThumbnail(344, 500)):?>
					<div class="kboard-list-thumbnail-child" style="background-image:url(<?php echo $content->getThumbnail(344, 500)?>)"></div>
					<?php endif?>
					<?php if(isset($content->attach->over_image)):?>
					<div class="kboard-list-thumbnail-over-background"></div>
					<div class="kboard-list-thumbnail-over-image"><img src="<?php echo site_url($content->attach->over_image[0])?>" alt=""></div>
					<?php endif?>
				</div>
				<div class="kboard-list-new"><?php if($content->isNew()):?><span class="kboard-pure-gallery-new-notify">New</span><?php endif?></div>
				<div class="kboard-list-title"><div class="kboard-pure-gallery-cut-strings">
					<?php if($content->secret):?><img src="<?php echo $skin_path?>/images/icon-lock.png" class="kboard-icon-lock" alt="<?php echo __('Secret', 'kboard')?>"><?php endif?>
					<?php echo $content->title?>
				</div></div>
				<div class="kboard-list-user"><?php echo $content->getUserDisplay()?></div>
			</a>
		</li>
		<?php endwhile?>
	</ul>
	<!-- 리스트 끝 -->
	

style.css 에서

background-size를 contain 으로 background-repear 를 no-repeat 로 해서 맞추어 봤습니다만,

kboard-pure-gallery-list .kboard-pure-gallery-list .kboard-list-item .kboard-list-thumbnail .kboard-list-thumbnail-child { height: 100%; background-size:contain; background-repeat: no-repeat; background-position: center; transition-duration: 0.5s; padding-bottom: -15px;}

뭔가 이미지의 비율과 딱 맞아 떨어지지는 않습니다.

그냥 어떻게 바꾸나요 ? 하고 묻는건 예의가 아닌 것 같아, 나름 찾아보고 

조언을 조금만 해주시면 하고 바라면서 글을 남겨 봅니다.

감사합니다.