--- /tmp/tweakbox/teaser_management.module	2006-09-08 19:02:52.000000000 +0200
+++ teaser_management.module	2006-09-19 19:39:44.000000000 +0200
@@ -182,6 +182,14 @@ function teaser_management_form_alter($f
                                 ),
             '#description'   => t('You can choose which method of updating to apply.')
           );
+          $form_cpy['teaser_management']['teaser_forbidden_tags'] = array(
+            '#type'          => 'textfield',
+            '#title'         => t('Forbidden tags'),
+            '#default_value' => variable_get('teaser_forbidden_tags', '<div><table><script><embed>'),
+            '#size'          => 30,
+            '#maxlength'     => 500,
+            '#description'   => t('HTML tags which shall not appear in teasers.')
+	  );
 	}
 	else {
 	  $form_cpy[$form_elt] = $form[$form_elt];
@@ -292,6 +300,22 @@ function _node_teaser(&$node) {
     }
   }
 
+  // We truncate the teaser at the first unallowed tag
+  $teaser_forbidden_tags = strtolower(variable_get('teaser_forbidden_tags', FALSE));
+  if($teaser_forbidden_tags) {
+    $forbidden_tags = preg_split('/\s+|<|>/', $teaser_forbidden_tags, -1, PREG_SPLIT_NO_EMPTY);
+    foreach($forbidden_tags as $num=>$tag) 
+      $forbidden_tags[$num] = '<' . $tag;
+  
+    if(count($forbidden_tags)) {
+      foreach ($forbidden_tags as $tag) {
+        if ($length = stripos($body, $tag)) {
+          $body = substr($body, 0, $length);
+        }
+      }
+    }
+  }
+  
   // If a valid delimiter has been specified, use it to chop of the teaser.
   if ($delimiter !== FALSE) {
     return substr($body, 0, $delimiter);