diff --git a/classes/optimizer/Optimizer.class.php b/classes/optimizer/Optimizer.class.php
index 6b91727f0..cffe5f9e7 100644
--- a/classes/optimizer/Optimizer.class.php
+++ b/classes/optimizer/Optimizer.class.php
@@ -48,18 +48,22 @@
             $files = array();
 			$hash = "";
             foreach($source_files as $key => $file) {
-		if($file['file'][0] == '/')
-		{
-			if(!file_exists($_SERVER['DOCUMENT_ROOT'].$file['file'])) continue;	
-		}
-                else if(!$file || !$file['file'] || !file_exists($file['file'])) continue;
-                $file['file'] = $source_files[$key]['file'] = str_replace("\\","/",$file['file']);
-                if(empty($file['optimized']) || preg_match('/^https?:\/\//i', $file['file']) ) $files[] = $file;
-                else{
+				if($file['file'][0] == '/'){
+					if(!file_exists($file['file'])){
+						if(file_exists($_SERVER['DOCUMENT_ROOT'] . $file['file'])){
+							$source_files[$key] = $file['file'] = $_SERVER['DOCUMENT_ROOT'].$file['file'];
+						}else{
+							continue;
+						}
+					}
+				} else if(!$file || !$file['file'] || !file_exists($file['file'])) continue;
+				$file['file'] = $source_files[$key]['file'] = str_replace("\\","/",$file['file']);
+				if(empty($file['optimized']) || preg_match('/^https?:\/\//i', $file['file']) ) $files[] = $file;
+				else{
 					$targets[] = $file;
 					$hash .= $file['file']; 
 				}
-            }
+			}
 
             if(!count($targets)) return $this->_getOptimizedRemoved($files);
 			$list_file_hash = md5($hash);
@@ -71,7 +75,7 @@
 					$oCacheHandler->put($list_file_hash, $buff);
 				}
 			}else{
-				$list_file = FileHandler::getRealPath($this->cache_path . $list_file_hash);
+				$list_file = FileHandler::getRealPath($this->cache_path . $list_file_hash . '.info.php');
 
 				if(!file_exists($list_file)){
 					$str = '<?php $f=array();';
@@ -81,6 +85,7 @@
 					FileHandler::writeFile($list_file, $str);
 				}
 			}
+
             array_unshift($files, array('file' => sprintf($this->script_file, $list_file_hash, $type) , 'media' => 'all'));
             $files = $this->_getOptimizedRemoved($files);
             if(!count($files)) return $files;
diff --git a/common/css/default.css b/common/css/default.css
index d4f85fc4b..dba8b421f 100644
--- a/common/css/default.css
+++ b/common/css/default.css
@@ -1,5 +1,3 @@
-@charset "utf-8";
-
 /* default.css - Type Selector Definition */
 body { margin:0;padding:0; font-size:.75em;}
 
diff --git a/common/css/popup.css b/common/css/popup.css
index 109a830e3..6b558e507 100644
--- a/common/css/popup.css
+++ b/common/css/popup.css
@@ -1,4 +1,2 @@
-@charset "utf-8";
-
 body { overflow:hidden; }
-table.colTable { margin:0; }
\ No newline at end of file
+table.colTable { margin:0; }
diff --git a/common/script.php b/common/script.php
index f5c9b865e..599c2115c 100644
--- a/common/script.php
+++ b/common/script.php
@@ -33,7 +33,7 @@ $XE_WEB_PATH = substr($XE_PATH,strlen($_SERVER['DOCUMENT_ROOT']));
 if(substr($XE_WEB_PATH,-1) != "/") $XE_WEB_PATH .= "/";
 $cache_path = $XE_PATH . 'files/cache/optimized/';
 $type = $_GET['t'];
-$list_file = $cache_path . $_GET['l'];
+$list_file = $cache_path . $_GET['l'] .'.info.php';
 
 
 function getRealPath($file){
@@ -111,6 +111,7 @@ function printFileList($list){
 		for($i=0,$c=count($list);$i<$c;$i++){
 			$file = getRealPath($list[$i]);
 			if(file_exists($file)){
+				$output .= '/* file:' . $file . " */\n";
 				$output .= file_get_contents($file);
 				$output .= "\n";
 			}
@@ -207,6 +208,8 @@ function _replaceCssPath($matches) {
 }
 
 function convertEncodingStr($str) {
+	if(!$str) return '';
+
 	$charset_list = array(
 			'UTF-8', 'EUC-KR', 'CP949', 'ISO8859-1', 'EUC-JP', 'SHIFT_JIS', 'CP932',
 			'EUC-CN', 'HZ', 'GBK', 'GB18030', 'EUC-TW', 'BIG5', 'CP950', 'BIG5-HKSCS',
@@ -218,13 +221,11 @@ function convertEncodingStr($str) {
 			'CP1257', 'CP850', 'CP866',
 			);
 
-	for($i=0;$i<count($charset_list);$i++) {
+	for($i=0,$c=count($charset_list);$i<$c;$i++) {
 		$charset = $charset_list[$i];
-		if($str){
-			$cstr = iconv($charset,$charset.'//IGNORE',$str);
-			if($str == $cstr && $charset != 'UTF-8'){
-				return iconv($charset, 'UTF-8//IGNORE', $str);
-			}
+		if($str == iconv($charset, $charset.'//IGNORE',$str)){
+			if($charset == 'UTF-8') return $str;
+			return iconv($charset, 'UTF-8//IGNORE', $str);
 		}
 	}
 
@@ -234,10 +235,11 @@ function convertEncodingStr($str) {
 if($type == '.js'){
 	printFileList($list);
 }else if($type == '.css'){
+	$css = array();
 
 	if($cache_support){
 		foreach($list as $file){
-			$cache_file = $cache_path . md5($file);
+			$cache_file = $cache_path . md5($file). '.cache.php';
 			$css[] = getRealPath($cache_file);
 		}
 
@@ -246,9 +248,8 @@ if($type == '.js'){
 		if(!$buff){
 			$buff = '';
 			$css = array();
-			foreach($list as $file){
-				$cache_file = $cache_path . md5($file);
-				$buff .= makeCacheFileCSS($file, getRealPath($cache_file), true);
+			foreach($list  as $file){
+				$buff .= makeCacheFileCSS($file, '', true);
 				$css[] = getRealPath($cache_file);
 			}
 
@@ -257,7 +258,7 @@ if($type == '.js'){
 
 	}else{
 		foreach($list as $file){
-			$cache_file = $cache_path . md5($file);
+			$cache_file = $cache_path . md5($file). '.cache.php';
 			$cache_mtime = getMtime($cache_file);
 			$css_mtime = getMtime($file);
 
diff --git a/common/tpl/common_layout.html b/common/tpl/common_layout.html
index 9ffafd877..01f5006bd 100644
--- a/common/tpl/common_layout.html
+++ b/common/tpl/common_layout.html
@@ -76,4 +76,4 @@
     <div id="waitingforserverresponse"></div>
 
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/common/tpl/popup_layout.html b/common/tpl/popup_layout.html
index 1131076fb..9131fc9fb 100644
--- a/common/tpl/popup_layout.html
+++ b/common/tpl/popup_layout.html
@@ -9,4 +9,4 @@
 <script type="text/javascript">
 	jQuery(window).load(setFixedPopupSize);
     var _isPoped = true;
-</script>
\ No newline at end of file
+</script>
diff --git a/common/tpl/redirect.html b/common/tpl/redirect.html
index 53f59e4f5..087cb18a8 100644
--- a/common/tpl/redirect.html
+++ b/common/tpl/redirect.html
@@ -23,4 +23,4 @@
         }
     </script>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/common/tpl/refresh.html b/common/tpl/refresh.html
index 4ac78ff14..8dd70d228 100644
--- a/common/tpl/refresh.html
+++ b/common/tpl/refresh.html
@@ -1,3 +1,3 @@
 <script type="text/javascript">
     top.location.reload();
-</script>
+</script>
\ No newline at end of file