$(document).ready(function() {
            // 1. ¿ø·¡ Å×À̺íÀ» °¨½Î´Â div·Î º¯È¯
            let $table = $('table.type_gal_board');
            let $newDiv = $('<div>').addClass('type_gal_board').css('width', '100%');
            
            // 2. ¸ðµç td¸¦ ÇϳªÀÇ ul¿¡ ´ã±â À§ÇØ ¼öÁý
            let $allTds = $table.find('tr[valign="top"] > td');
            
            // 3. »õ·Î¿î ul »ý¼º
            let $newUl = $('<ul>').attr('valign', 'top');
            
            // 4. °¢ td¸¦ li·Î º¯È¯
            $allTds.each(function() {
                let $td = $(this);
                let $li = $('<li>').css('width', '25%');
                
                // ³»ºÎ ÄÜÅÙÃ÷ À籸¼º
                let $checkbox = $td.find('input[type="checkbox"]');
                let $content = $td.find('.bbsnewf5');
                
                let $galBox = $('<div>').addClass('gal_box');
                let $thumbnail = $('<div>').addClass('thumbnail').append($content.find('img').parent());
                let $description = $('<div>').addClass('description');
                let $subject = $('<div>').addClass('gallery_subject');
                
                // Ä«Å×°í¸®¿Í ÀÛ¼ºÀÏÀÚ¿¡¼­ "Ä«Å×°í¸® :"¿Í "ÀÛ¼ºÀÏÀÚ :" Á¦°Å
                let $categoryFont = $content.find('.gallery_etc font:contains("Ä«Å×°í¸®")');
                let $categoryText = $categoryFont.text().replace('Ä«Å×°í¸® : ', '').trim();
                let $category = $('<p>').append($categoryFont.clone().text($categoryText));
                
                let $title = $content.find('.gallery_subject a').clone();
                
                let $dateFont = $content.find('.gallery_etc font:contains("ÀÛ¼ºÀÏÀÚ")');
                let $dateText = $dateFont.text().replace('ÀÛ¼ºÀÏÀÚ : ', '').trim();
                let $date = $('<span>').append($dateFont.clone().text($dateText));
                
                $subject.append($category).append($title).append($date);
                $description.append($subject);
                $galBox.append($thumbnail).append($description);
                
                $li.append($checkbox).append($galBox);
                $newUl.append($li);
            });
            
            // 5. »õ·Î¿î ±¸Á¶·Î ±³Ã¼
            $newDiv.append($newUl);
            $table.replaceWith($newDiv);
        });