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		<td colspan="3" class="left pl15" ><span id="favorites32951"><img src="/2017/bullets/skin/default/img/star.gif" style="cursor:pointer" onClick="favorites(32951)" /></span> <b>22 개정 공통수학 ㅊ ㅓ ㄴ ㅈ ㅐ 교과서 (전 ㅇ ㅌ) 한글파일</b></td>
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		<td>3229회, 작성일:2025-04-14 12:01</td>
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							<td width="*" height="25px" style="padding-top:5px; text-align:left; font-size:13px" align=left>글쓴이 : <img src="/data/member_picture/level/level_4.gif" align=absmiddle"> <img src="/data/member_picture/pds/096f.gif" align=absmiddle> <img src="/data/member_picture/community/g서울.gif" align=absmiddle><span onmousedown="showNameLayer('layer_name4','visible', event)" style="cursor:pointer;"><b><font color=#555555>캐트린</font></b></span>[<b><a href="/2017/mypage/memo/?mno=239638">개인게시판</a></b>]</td></td></tr><tr><td width="*" style="padding:15px 20px 15px 0; text-align:left; font-size:13px; line-height:18px;"></td></tr></table><br /><table cellspacing=1 cellpadding=3 border=0 bgcolor=#CCCCCC class=table_st1><tr><td bgcolor=#F1F1F1>윗 글</td><td bgcolor=#FFFBF7><a href="?bbs_no=1&no=32953&authkey=LzIwMTcvYnVsbGV0cy9pbmRleC5waHA/YmJzX25vPTEmbm89MzI4OTg=">완자 기출픽 중1 수학, 과학 파일 요청합니다~</a></td><td bgcolor=#FFFBF7><span onmousedown="showNameLayer('layer_name2','visible', event)" style="cursor:pointer;"><b><font color=#555555>SYmathT</font></b></span></td><td bgcolor=#FFFBF7>344일전</td></tr><tr><td bgcolor=#F1F1F1>아랫글</td><td bgcolor=#FFFBF7><a href="?bbs_no=1&no=32949&authkey=LzIwMTcvYnVsbGV0cy9pbmRleC5waHA/YmJzX25vPTEmbm89MzI4OTg=">22개정 중1  사회  문제집</a></td><td bgcolor=#FFFBF7><span onmousedown="showNameLayer('layer_name3','visible', event)" style="cursor:pointer;"><b><font color=#555555>dorislier</font></b></span></td><td bgcolor=#FFFBF7>345일전</td></tr></table><br />
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<script type="text/javascript" src="/2017/js/anno.js"></script>
	<!-- Bootstrap 5 최신 버전 JS (CDN) -->
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz" crossorigin="anonymous"></script>
<!-- 서버 상태 체크 스크립트 -->
<script>
    $(document).ready(function() {
        // 사용량에 따른 색상 계산 함수
        function getUsageColor(usagePercent) {
            var percent = parseFloat(usagePercent);
            if (isNaN(percent)) return { bg: '#e0e0e0', color: '#383d41' };
            
            // 오프라인 처리
            if (percent < 0) {
                return { bg: '#e2e3e5', color: '#383d41' };
            }
            
            // 0-10%: 파란색
            if (percent <= 10) {
                return { bg: '#0066CC', color: '#ffffff' };
            }
            // 10-20%: 하늘색
            else if (percent <= 20) {
                return { bg: '#00BFFF', color: '#ffffff' };
            }
            // 20-30%: 하늘색→녹색 (그라데이션)
            else if (percent <= 30) {
                var ratio = (percent - 20) / 10;
                // 하늘색 #00BFFF (0, 191, 255) → 녹색 #28a745 (40, 167, 69)
                var r = Math.round(0 + (40 * ratio));
                var g = Math.round(191 + ((167 - 191) * ratio));
                var b = Math.round(255 + ((69 - 255) * ratio));
                return { bg: 'rgb(' + r + ',' + g + ',' + b + ')', color: '#ffffff' };
            }
            // 30-40%: 녹색
            else if (percent <= 40) {
                return { bg: '#28a745', color: '#ffffff' };
            }
            // 40-50%: 녹색→노란색 (그라데이션)
            else if (percent <= 50) {
                var ratio = (percent - 40) / 10;
                // 녹색 #28a745 (40, 167, 69) → 노란색 #ffc107 (255, 193, 7)
                var r = Math.round(40 + ((255 - 40) * ratio));
                var g = Math.round(167 + ((193 - 167) * ratio));
                var b = Math.round(69 + ((7 - 69) * ratio));
                return { bg: 'rgb(' + r + ',' + g + ',' + b + ')', color: '#000000' };
            }
            // 50-60%: 노란색
            else if (percent <= 60) {
                return { bg: '#ffc107', color: '#000000' };
            }
            // 60-70%: 노란색→주황색 (그라데이션)
            else if (percent <= 70) {
                var ratio = (percent - 60) / 10;
                // 노란색 #ffc107 (255, 193, 7) → 주황색 #FF8C00 (255, 140, 0)
                var r = Math.round(255); // 255 유지
                var g = Math.round(193 + ((140 - 193) * ratio));
                var b = Math.round(7 + ((0 - 7) * ratio));
                return { bg: 'rgb(' + r + ',' + g + ',' + b + ')', color: '#ffffff' };
            }
            // 70-80%: 주황색
            else if (percent <= 80) {
                return { bg: '#FF8C00', color: '#ffffff' };
            }
            // 80-90%: 주황색→빨간색 (그라데이션)
            else if (percent <= 90) {
                var ratio = (percent - 80) / 10;
                // 주황색 #FF8C00 (255, 140, 0) → 빨간색 #dc3545 (220, 53, 69)
                var r = Math.round(255 + ((220 - 255) * ratio));
                var g = Math.round(140 + ((53 - 140) * ratio));
                var b = Math.round(0 + ((69 - 0) * ratio));
                return { bg: 'rgb(' + r + ',' + g + ',' + b + ')', color: '#ffffff' };
            }
            // 90-100%: 빨간색
            else {
                return { bg: '#dc3545', color: '#ffffff' };
            }
        }
        
        // 서버 상태 표시 영역이 있을 때만 실행
        if($('#server-status-bar').length > 0) {
            var servers = [
                { id: 'server-www',  url: 'https://www.iteach4u.kr/status.php',  name: '서버1', btnSelector: '.download1 a' },
                { id: 'server-www2', url: 'https://www2.iteach4u.kr/status.php', name: '서버2', btnSelector: '.download2 a' },
                { id: 'server-backup', url: 'https://backup.iteach4u.kr/status.php', name: '서버3', btnSelector: '.download3 a' },
                { id: 'server-www3', url: 'https://www3.iteach4u.kr/status.php', name: '서버4', btnSelector: '.download4 a' }
            ];
            
            servers.forEach(function(server) {
                var $serverEl = $('#' + server.id);
                if($serverEl.length === 0) return;
                
                $.ajax({
                    url: server.url,
                    type: 'GET',
                    dataType: 'json',
                    timeout: 3000,
                    success: function(data) {
                        // status.php 에서 usage_percent 값이 넘어오며,
                        // 측정 실패 시 '오프라인' 이라는 문자열이 넘어올 수 있음
                        var usage = data.usage_percent || (data.status === 'unknown' ? '오프라인' : '0%');
                        var usagePercent = parseFloat(usage);
                        
                        // 사용량 표시 업데이트
                        $serverEl.find('.usage').text(usage);
                        
                        // 사용량에 따른 색상 적용
                        var colors = getUsageColor(usagePercent);
                        $serverEl.css({
                            'background-color': colors.bg,
                            'color': colors.color
                        });

                        // 다운로드 버튼 글자색을 서버 상태 아이콘 색상과 동일하게 적용
                        if (server.btnSelector) {
                            $(server.btnSelector).css('color', colors.bg);

                            // 서버 사용량이 100% 이상일 때 다운로드 제한 및 안내 메시지
                            if (!isNaN(usagePercent) && usagePercent >= 100) {
                                $(server.btnSelector).off('click.serverLimit').on('click.serverLimit', function(e) {
                                    e.preventDefault();
                                    alert('사용량이 많습니다. 5초후 시도하시거나 다른 서버에서 다운로드를 하시기 바랍니다.');
                                });
                            } else {
                                // 100% 미만일 때는 제한 이벤트 제거
                                $(server.btnSelector).off('click.serverLimit');
                            }
                        }
                    },
                    error: function() {
                        // 호출 자체가 실패한 경우도 오프라인으로 간주
                        $serverEl.find('.usage').text('오프라인');
                        $serverEl.css({
                            'background-color': '#e2e3e5',
                            'color': '#383d41'
                        });
                    }
                });
            });
        }
    });
</script>
</body>
</html>