diff --git a/.htaccess b/.htaccess
index 508242c49..1fa4957a4 100644
--- a/.htaccess
+++ b/.htaccess
@@ -3,6 +3,7 @@ RewriteEngine On
 # image...
 RewriteRule ^([a-zA-Z0-9_]+)/files/attach/images/(.*) ./files/attach/images/$2 [L]
 RewriteRule ^([a-zA-Z0-9_]+)/files/member_extra_info/(.*) ./files/member_extra_info/$2 [L]
+RewriteRule ^([a-zA-Z0-9_]+)/files/cache/(.*) ./files/cache/$2 [L]
 RewriteRule ^([a-zA-Z0-9_]+)/modules/(.*) ./modules/$2 [L]
 RewriteRule ^([a-zA-Z0-9_]+)/common/(.*) ./common/$2 [L]
 RewriteRule ^([a-zA-Z0-9_]+)/widgets/(.*) ./widgets/$2 [L]
diff --git a/classes/context/Context.class.php b/classes/context/Context.class.php
index 3958f822f..1833eaa37 100644
--- a/classes/context/Context.class.php
+++ b/classes/context/Context.class.php
@@ -864,17 +864,8 @@
             // body 내의 <style ..></style>를 header로 이동
             $content = preg_replace_callback('!<style(.*?)<\/style>!is', array($this,'moveStyleToHeader'), $content);
 
-            // <br> 코드 변환
-            $content = preg_replace('/<br([^>\/]*)(\/>|>)/i','<br$1 />', $content);
-
-            // 몇가지 대문자 태그를 소문자로 변경
-            //$content = preg_replace_callback('!<(\/){0,1}([A-Z]+)([^>]*?)>!s',array($this,'transTagToLowerCase'), $content);
-
-            // <img ...> 코드를 <img ... /> 코드로 변환
-            $content = preg_replace('/<img(.*?)(\/){0,1}>/i','<img$1 />', $content);
-
-            // blogapi tool에서 삽입된 코드 삭제
-            //$content = str_replace('atomicselection="true"','',$content);
+            // <img|br> 코드 변환
+            $content = preg_replace('/<(img|br)([^>\/]*)(\/>|>)/i','<$1$2 />', $content);
 
             return $content;
         }
diff --git a/classes/display/DisplayHandler.class.php b/classes/display/DisplayHandler.class.php
index 1cba78241..ff14ce5c7 100644
--- a/classes/display/DisplayHandler.class.php
+++ b/classes/display/DisplayHandler.class.php
@@ -87,16 +87,9 @@
         function display($content) {
             $content .= $this->_debugOutput();
 
-            $path = getScriptPath();
-
-            // commons/modules/files/widgets/layouts/addons 로 시작되는 src나 href의 값을 절대경로로 변경
-            $content = preg_replace('!(href|src)=("|\'){0,1}(commons|modules|widgets|layouts|addons|files)!is', '\\1=\\2'.$path.'\\3', $content);
-            $content = preg_replace('!(href|src)=("|\'){0,1}\.\/([a-zA-Z0-9\_^\/]+)\/!is', '\\1=\\2'.$path.'\\3/', $content);
-
             // 출력하기 전에 trigger 호출 (after)
             ModuleHandler::triggerCall('display', 'after', $content);
 
-
             if($this->gz_enabled) print ob_gzhandler($content, 5);
             else print $content;
         }
diff --git a/classes/optimizer/Optimizer.class.php b/classes/optimizer/Optimizer.class.php
index d2ca362e3..ef73c6757 100644
--- a/classes/optimizer/Optimizer.class.php
+++ b/classes/optimizer/Optimizer.class.php
@@ -124,6 +124,8 @@
             $size = filesize($content_file);
             $mtime = filemtime($content_file);
             $class_mtime = filemtime("./classes/optimizer/Optimizer.class.php");
+
+            // js, css 파일을 php를 통해서 출력하고 이 출력시에 헤더값을 조작하여 캐싱과 압축전송이 되도록 함 (IE6는 CSS파일일 경우 gzip압축하지 않음)
             $header_buff = '<?php
 $content_filename = "'.$content_filename.'";
 $mtime = '.$mtime.';
@@ -137,15 +139,33 @@ if(isset($_SERVER["HTTP_IF_MODIFIED_SINCE"])) {
         $cached = true;
     } 
 }
+
+if( preg_match("/MSIE 6.0/i",$_SERVER["HTTP_USER_AGENT"]) || strpos($_SERVER["HTTP_ACCEPT_ENCODING"], "gzip")===false || !function_exists("ob_gzhandler") ) {
+    $size = filesize($content_filename);
+} else {
+    $f = fopen($content_filename,"r");
+    $buff = fread($f, filesize($content_filename));
+    fclose($f);
+    $buff = ob_gzhandler($buff, 5);
+    $size = strlen($buff);
+    header("Content-Encoding: gzip");
+}
+
 header("Content-Type: '.$content_type.'; charset=utf-8");
 header("Date: '.substr(gmdate('r'), 0, -5).'GMT");
 header("Expires: '.substr(gmdate('r', strtotime('+1 MONTH')), 0, -5).'GMT");
-header("Cache-Control: private, max-age=86400"); 
+header("Cache-Control: private, max-age=2592000"); 
 header("Pragma: cache"); 
 header("Last-Modified: '.substr(gmdate('r', $mtime), 0, -5).'GMT");
-header("ETag: '.dechex($unique).'-'.dechex($size).'-'.dechex($mtime).'"); 
-if(!$cached && file_exists($content_filename)) print file_get_contents($content_filename);
-exit();
+header("ETag: \"'.dechex($unique).'-".dechex($size)."-'.dechex($mtime).'\""); 
+
+if(!$cached) {
+    if(!$buff) {
+        $f = fopen($content_filename,"r");
+        fpassthru($f);
+    } else print $buff;
+}
+
 ?>';
             FileHandler::writeFile($filename, $header_buff);
         }
@@ -154,11 +174,14 @@ exit();
          * @brief css의 경우 import/ background 등의 속성에서 사용되는 url내의 경로를 변경시켜줌
          **/
         function replaceCssPath($file, $str) {
+            // css 파일의 위치를 구함
             $this->tmp_css_path = Context::getRequestUri().preg_replace("/^\.\//is","",dirname($file))."/";
-            $str = preg_replace_callback('!url\(("|\')?([^\)]+)("|\')?\)!is', array($this, '_replaceCssPath'), $str);
 
+            // url() 로 되어 있는 css 파일의 경로를 변경
+            $str = preg_replace_callback('!url\(("|\')?([^\)]+)("|\')?\)!is', array($this, '_replaceCssPath'), $str);
             $str = preg_replace('!\/([^\/]*)\/\.\.\/!is','/', $str);
 
+            // charset 지정 문구를 제거
             $str = preg_replace('!@charset([^;]*?);!is','',$str);
 
             return $str;