diff --git a/code/LeftAndMain.php b/code/LeftAndMain.php
index 0551b83d..2b0b68c4 100644
--- a/code/LeftAndMain.php
+++ b/code/LeftAndMain.php
@@ -137,6 +137,7 @@ class LeftAndMain extends Controller {
 		
 		Requirements::javascript(THIRDPARTY_DIR . '/prototype.js');
 		Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery.js');
+		Requirements::javascript(THIRDPARTY_DIR . '/jquery/jquery_improvements.js');
 		Requirements::javascript(THIRDPARTY_DIR . '/behaviour.js');
 		Requirements::javascript(THIRDPARTY_DIR . '/jquery/plugins/livequery/jquery.livequery.js');
 		Requirements::javascript(SAPPHIRE_DIR . '/javascript/core/jquery.ondemand.js');