diff --git a/12/index.html b/12/index.html
index b6a6e5a..bf61337 100644
--- a/12/index.html
+++ b/12/index.html
@@ -285,6 +285,10 @@
                 	e.preventDefault()
                 }
             });
+
+            document.querySelector("audio_05 #TOC_icon").addEventListener("click",function(){
+              document.querySelector("#implicancies_05 #week_05").classList.toggle("hidden");
+            });