diff --git a/application/config/internal.php b/application/config/internal.php
index 354c57579ea..c9756a89fe8 100644
--- a/application/config/internal.php
+++ b/application/config/internal.php
@@ -218,6 +218,8 @@
                 'registerGeneralScript'   => 'LS_Twig_Extension::registerGeneralScript',
                 'registerTemplateScript'  => 'LS_Twig_Extension::registerTemplateScript',
                 'registerScript'          => 'LS_Twig_Extension::registerScript',
+                'unregisterPackage'       => 'LS_Twig_Extension::unregisterPackage',
+                'listCoreScripts'         => 'LS_Twig_Extension::listCoreScripts',
                 'getAllQuestionClasses'   => 'LS_Twig_Extension::getAllQuestionClasses',
                 'intval'                  => 'intval',
                 'empty'                   => 'empty',
@@ -252,7 +254,7 @@
                     'ETwigViewRendererYiiCoreStaticClassesProxy' => array("Html"),
                     'LSYii_Application'                          => array("request"),
                 ),
-                'functions' => array('include', 'dump', 'flatEllipsizeText', 'getLanguageData', 'array_flip', 'array_intersect_key', 'registerPublicCssFile', 'registerTemplateCssFile', 'registerGeneralScript', 'registerTemplateScript', 'registerScript', 'getAllQuestionClasses','intval', 'count', 'empty', 'reset', 'renderCaptcha', 'getPost','getParam', 'getQuery', 'isset', 'str_replace', 'assetPublish', 'image', 'sprintf', 'gT' ),
+                'functions' => array('include', 'dump', 'flatEllipsizeText', 'getLanguageData', 'array_flip', 'array_intersect_key', 'registerPublicCssFile', 'registerTemplateCssFile', 'registerGeneralScript', 'registerTemplateScript', 'registerScript', 'unregisterPackage', 'listCoreScripts', 'getAllQuestionClasses','intval', 'count', 'empty', 'reset', 'renderCaptcha', 'getPost','getParam', 'getQuery', 'isset', 'str_replace', 'assetPublish', 'image', 'sprintf', 'gT' ),
             ),
 
         ),
diff --git a/application/core/LS_Twig_Extension.php b/application/core/LS_Twig_Extension.php
index 660bec79244..d2e820b5c84 100644
--- a/application/core/LS_Twig_Extension.php
+++ b/application/core/LS_Twig_Extension.php
@@ -229,7 +229,7 @@ public static function image($sImagePath, $alt='', $htmlOptions=array ( ) )
     public static function getTemplateForRessource($sRessource)
     {
         $oRTemplate = Template::model()->getInstance();
-        
+
         while (!file_exists($oRTemplate->path.'/'.$sRessource)){
 
             $oMotherTemplate = $oRTemplate->oMotherTemplate;
@@ -258,5 +258,22 @@ public static function getQuery($sName, $sDefaultValue=null)
         return Yii::app()->request->getQuery($sName, $sDefaultValue);
     }
 
+    public static function unregisterPackage($name)
+    {
+        return Yii::app()->getClientScript()->unregisterPackage($name);        
+    }
+
+    public static function listCoreScripts()
+    {
+        foreach(Yii::app()->getClientScript()->coreScripts as $key => $package){
+
+            echo "<hr>";
+            echo "$key: <br>";
+            var_dump($package);
+
+        }
+
+    }
+
 
 }