diff --git a/apachesolr.index.inc b/apachesolr.index.inc
index c11fa1a..e256b09 100644
--- a/apachesolr.index.inc
+++ b/apachesolr.index.inc
@@ -18,6 +18,8 @@ function apachesolr_add_node_document(&$documents, $nid, $namespace) {
  * Strip html tags and also control characters that cause Jetty/Solr to fail.
  */
 function apachesolr_clean_text($text) {
+  // Remove invisible content.
+  $text = preg_replace('@<(applet|audio|canvas|command|embed|iframe|map|menu|noembed|noframes|noscript|script|style|svg|video)[^>]*>.*</\1>@siU', ' ', $text);
   // Add spaces before stripping tags to avoid running words together.
   $text = filter_xss(str_replace(array('<', '>'), array(' <', '> '), $text), array());
   // Decode entities and then make safe any < or > characters.