de-obfuscate an obfuscated email

customize.dist/email.js

@@ -0,0 +1,23 @@
+define(function () {
+    var Email = {};
+    var patt = /./g;
+    var each = function (d) {
+        d = d || 1;
+        return function (c, i) {
+            return String.fromCharCode((c.charCodeAt(0) + d));
+        };
+    };
+
+    Email.makeScrambler = function (n) {
+        return {
+            encrypt: function (S) {
+                return S.replace(patt, each(n));
+            },
+            decrypt: function (S) {
+                return S.replace(patt, each(-n));
+            }
+        };
+    };
+
+    return Email;
+});