From 829800834def0ac16a09c22df95f371c84ba9cfd Mon Sep 17 00:00:00 2001
From: Juriy Zaytsev <kangax@gmail.com>
Date: Thu, 12 Nov 2009 21:21:42 -0500
Subject: [PATCH] Do not create translations object every time method is
 called.

---
 src/dom/event.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/dom/event.js b/src/dom/event.js
index 0d86e11..b57d3c4 100644
--- a/src/dom/event.js
+++ b/src/dom/event.js
@@ -379,12 +379,12 @@
     window.addEventListener('unload', Prototype.emptyFunction, false);
 
 
-  var _getDOMEventName = Prototype.K;
+  var _getDOMEventName = Prototype.K,
+      translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
 
   if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
     _getDOMEventName = function(eventName) {
-      var translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
-      return eventName in translations ? translations[eventName] : eventName;
+      return (translations[eventName] || eventName);
     };
   }