diff --git a/htmlpurifier.module b/htmlpurifier.module
index 57edafa..09503a0 100644
--- a/htmlpurifier.module
+++ b/htmlpurifier.module
@@ -111,23 +111,6 @@ function htmlpurifier_filter_info() {
   return $filters;
 }
 
-/**
- * Implements of hook_nodeapi().
- */
-function htmlpurifier_nodeapi(&$node, $op, $a3, $a4) {
-  if ($op == 'view') {
-
-    // Should we load CSS cache data from teaser or body?
-    if ($a3 == TRUE) {
-      _htmlpurifier_add_css( $node->content['teaser']['#value'], $node->nid );
-    }
-    else {
-      _htmlpurifier_add_css( $node->content['body']['#value'], $node->nid );
-    }
-  }
-  // @todo: Deal with CCK fields - probably needs to go in op alter?
-}
-
 // -- INTERNAL FUNCTIONS ---------------------------------------------------- //
 
 /**
@@ -155,77 +138,6 @@ function _htmlpurifier_process($text, $filter, $format, $langcode, $cache) {
 }
 
 /**
- * Helper function for hook_nodeapi
- *  Finds extracted style blocks based on a cache link left by hook_filter
- *  Aggregates the extracted style blocks and adds them to the document head
- *  Also removes the cache link left in hook_filter to the CSS cache
- *
- * @param string &$field
- *    Field to process, this should be the actual field value
- *      ex. $node->content['body']['#value']
- *
- * @param int $nid
- *    Node ID of the node to which these stylesheets belong
- *    Since filters don't know their node context, we have to use a token
- *      to generate the stylesheet scope, and replace it in hook_nodeapi
- */
-function _htmlpurifier_add_css( &$field, $nid ) {
-
-  // Some basic validation to assure we really got a rendered field
-  if (!is_string($field)) {
-    return;
-  }
-
-  $cache_matches = array();
-  $cache_match = preg_match('#<!-- HTML Purifier Cache \#([-\w]*:[\w]*) -->#', $field, $cache_matches);
-
-  // If there's an HTML Purifier Cache #, we need to load CSSTidy blocks
-  if ($cache_match == 1) {
-    $cid = 'css:' . $cache_matches[1];
-    $old = cache_get($cid, 'cache_htmlpurifier');
-
-    // We should always have some cached style blocks to load, but if we don't, just bail
-    if ($old) {
-      $styles = array();
-      $style_rendered = '';
-      foreach ($old->data as $i => $style) {
-
-        // Replace Node ID tokens if necessary, otherwise use cached CSSTidy blocks
-        // NOTE: This token is forgeable, but we expect that if the user
-        // is able to invoke this transformation, it will be relatively
-        // harmless.
-        if (strpos($style, '[%HTMLPURIFIER:NID%]') !== FALSE) {
-          $styles[$i] = str_replace('[%HTMLPURIFIER:NID%]', (int) $nid, $style);
-        }
-        else {
-          $styles[$i] = $style;
-        }
-
-        // Save any CSSTidy blocks we find to be rendered in the document head
-        if (!empty($style)) {
-          $style_rendered .= $styles[$i] . "\n";
-        }
-      }
-
-      // Add the rendered stylesheet to the document header
-      if ($style_rendered != '') {
-        drupal_set_html_head('<style type="text/css">' . "\n" . '<!--' . "\n" . $style_rendered . '--></style>');
-      }
-
-      // Remove the HTML Purifier cache key from the field argument
-      $field = str_replace($cache_matches[0], '', $field);
-
-      // If we had to update CSSTidy blocks, cache the results
-      if ($old->data != $styles) {
-        cache_set($cid, $styles, 'cache_htmlpurifier', CACHE_PERMANENT);
-      }
-    }
-  }
-}
-
-
-
-/**
  * Processes HTML according to a format and returns purified HTML. Makes a
  * cache pass if possible.
  *
@@ -260,30 +172,9 @@ function _htmlpurifier_process_text($text, $filter, $format, $langcode, $cache =
   _htmlpurifier_load();
   $config = _htmlpurifier_get_config($format->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) {
-    _htmlpurifier_load_csstidy();
-  }
-
   $purifier = new HTMLPurifier($config);
   $ret = $purifier->purify($text);
 
-  // If using Filter.ExtractStyleBlocks we need to handle the CSSTidy output
-  if ($config_extractstyleblocks == TRUE) {
-
-    // We're only going to bother if we're caching! - no caching? no style blocks!
-    if ($cache) {
-
-      // Get style blocks, cache them, and help hook_nodeapi find the cache
-      $styles = $purifier->context->get('StyleBlocks');
-      cache_set('css:' . $cid, $styles, 'cache_htmlpurifier', CACHE_PERMANENT);
-      $ret = '<!-- HTML Purifier Cache #' . $cid . ' -->' . $ret;
-    }
-  }
-
   if ($cache) cache_set($cid, $ret, 'cache_htmlpurifier', CACHE_PERMANENT);
 
   return $ret;
@@ -377,12 +268,6 @@ function _htmlpurifier_get_config($format = 0) {
       $config_data = FALSE;
     }
 
-    if (!empty($config_data['Filter.ExtractStyleBlocks'])) {
-      if (!_htmlpurifier_load_csstidy()) {
-        $config_data['Filter.ExtractStyleBlocks'] = '0';
-        drupal_set_message(t("Could not enable ExtractStyleBlocks because CSSTidy was not installed.  You can download CSSTidy module from <a href='http://drupal.org/project/csstidy'>http://drupal.org/project/csstidy</a>"), 'error', FALSE);
-      }
-    }
     // {FALSE, TRUE, FALSE} = {no index, everything is allowed, don't do mq fix}
     $config->mergeArrayFromForm($config_data, FALSE, TRUE, FALSE);
   }
@@ -391,26 +276,6 @@ function _htmlpurifier_get_config($format = 0) {
 
 }
 
-function _htmlpurifier_load_csstidY() {
-  // 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";
-    return TRUE;
-  }
-  return FALSE;
-}
-
 /**
  * Returns the name of the configuration function for $format, or FALSE if none
  * exists. Function name will be htmlpurifier_config_N.
@@ -546,17 +411,6 @@ function _htmlpurifier_config_hack($form_element, &$form_state) {
     }
     $form_state['values'] = array_merge_recursive($form_state['values'], $value);
   }
-  foreach ($form_state['values'] as $i => $config_data) {
-    if (!is_array($config_data)) continue;
-    if (!empty($config_data['Filter.ExtractStyleBlocks'])) {
-      if (!empty($config_data['Null_Filter.ExtractStyleBlocks.Scope'])) {
-        drupal_set_message(t("You have not set <code>Filter.ExtractStyleBlocks.Scope</code>; this means that users can add CSS that affects all of your Drupal theme and not just their content block.  It is recommended to set this to <code>#node-[%HTMLPURIFIER:NID%]</code> (including brackets) which will automatically ensure that CSS directives only apply to their node."), 'warning', FALSE);
-      }
-      elseif (!isset($config_data['Filter.ExtractStyleBlocks.Scope']) || $config_data['Filter.ExtractStyleBlocks.Scope'] !== '#node-[%HTMLPURIFIER:NID%]') {
-        drupal_set_message(t("You have enabled Filter.ExtractStyleBlocks.Scope, but you did not set it to <code>#node-[%HTMLPURIFIER:NID%]</code>; CSS may not work unless you have special theme support."), 'warning', FALSE);
-      }
-    }
-  }
   return $form_element;
 }