--- htmlpurifier.module	2010-06-04 09:44:15.000000000 -0700
+++ htmlpurifier.module	(working copy)
@@ -121,8 +121,39 @@ function _htmlpurifier_process($text, $f
   
   _htmlpurifier_load();
   $config = _htmlpurifier_get_config($format);
+
+  // If ExtractStyleBlocks is enabled, we'll need to do a bit more for CSSTidy
+  $config_extractstyleblocks = $config->get('Filter.ExtractStyleBlocks');
+
+  // Maybe this works if CSSTidy is at root? CSSTidy could be other places though
+  if ($config_extractstyleblocks == true) {
+    // If CSSTidy module is installed, it should have a copy we can use
+    $csstidy_path = drupal_get_path('module', 'csstidy') .'/csstidy';
+
+    // Some future-proofing for library path
+    if (function_exists('libraries_get_path')) {
+      $csstidy_library = libraries_get_path('csstidy');
+      if (file_exists("$csstidy_library/class.csstidy.php")) {
+        $csstidy_path = $csstidy_library;
+      }
+    }
+
+    // Load CSSTidy if we can find it
+    if (file_exists("$csstidy_path/class.csstidy.php")) {
+      require_once "$csstidy_path/class.csstidy.php";
+    }
+  }
+
   $purifier = new HTMLPurifier($config);
   $ret = $purifier->purify($text);
+
+  // Add CSSTidy extraced StyleBlocks if needed
+  if ($config_extractstyleblocks == true) {
+    $styles = $purifier->context->get('StyleBlocks');
+    foreach ($styles as $style) {
+      $ret = '<style type="text/css">' . $style . '</style>' . $ret;
+    }
+  }
   
   if ($cache) cache_set($cid, $ret, 'cache_htmlpurifier', CACHE_PERMANENT);