diff --git a/redyellow.js b/redyellow.js
index 50f776d..6044090 100644
--- a/redyellow.js
+++ b/redyellow.js
@@ -5,12 +5,6 @@
 
 
 function red() {
-	var startMsec = new Date();
-  // ???????????????CPU?????????
-  while (new Date() - startMsec < waitMsec);
-}
- 
-sleep(5000);
   document.getElementById("box").style.backgroundColor = "red"; 
   document.getElementById("box").style.color = "red";
 }