Index: functions/mime.php
===================================================================
RCS file: /cvsroot/squirrelmail/squirrelmail/functions/mime.php,v
retrieving revision 1.377
diff -u -r1.377 mime.php
--- functions/mime.php	25 Oct 2006 11:05:18 -0000	1.377
+++ functions/mime.php	2 Dec 2006 15:03:11 -0000
@@ -1695,12 +1699,66 @@
 function sq_fixstyle($body, $pos, $message, $id, $mailbox){
     global $view_unsafe_images;
     $me = 'sq_fixstyle';
-    $ret = sq_findnxreg($body, $pos, '</\s*style\s*>');
-    if ($ret == FALSE){
+
+    // workaround for </style> in between comments
+    $iCurrentPos = $pos;
+    $content = '';
+    $sToken = '';
+    $bSucces = false;
+    $bEndTag = false;
+    for ($i=$pos,$iCount=strlen($body);$i<$iCount;++$i) {
+        $char = $body{$i};
+        switch ($char) {
+            case '<':
+                $sToken .= $char;
+                break;
+            case '/':
+                 if ($sToken == '<') {
+                    $sToken .= $char;
+                    $bEndTag = true;
+                 } else {
+                    $content .= $char;
+                 }
+                 break;
+            case '>':
+                 if ($bEndTag) {
+                    $sToken .= $char;
+                    if (preg_match('/\<\/\s*style\s*\>/i',$sToken,$aMatch)) {
+                        $newpos = $i + 1;
+                        $bSucces = true;
+                        break 2;
+                    } else {
+                        $content .= $sToken;
+                    }
+                    $bEndTag = false;
+                 } else {
+                    $content .= $char;
+                 }
+                 break;
+            case '!':
+                if ($sToken == '<') {
+                    // possible comment
+                    if (isset($body{$i+2}) && substr($body,$i,3) == '!--') {
+                        $i = strpos($body,'-->',$i+3);
+                        $sToken = '';
+                    }
+                } else {
+                    $content .= $char;
+                }
+                break;
+            default:
+                if ($bEndTag) {
+                    $sToken .= $char;
+                } else {
+                    $content .= $char;
+                }
+                break;
+        }
+    }
+    if ($bSucces == FALSE){
         return array(FALSE, strlen($body));
     }
-    $newpos = $ret[0] + strlen($ret[2]);
-    $content = $ret[1];
+
     /**
     * First look for general BODY style declaration, which would be
     * like so: