diff --git a/src/js/utilJS.tw b/src/js/utilJS.tw
index f266637675f911f02fe5cbc6fda5257bcbaf773d..60e1b6694f38a4d2edd7df6b8df536cf04a730f2 100644
--- a/src/js/utilJS.tw
+++ b/src/js/utilJS.tw
@@ -401,11 +401,11 @@ window.numberWithCommas = function(x) {
 }
 
 
-window.random = function(min,max) {
+window.jsRandom = function(min,max) {
     return Math.floor(Math.random()*(max-min+1)+min);
 }
 
-window.randomMany = function (arr, count) {
+window.jsRandomMany = function (arr, count) {
 	var result = [];
 	var _tmp = arr.slice();
 	for (var i = 0; i < count; i++) {
@@ -415,7 +415,7 @@ window.randomMany = function (arr, count) {
 	return result;
 }
 
-window.either = function(choices) {
+window.jsEither = function(choices) {
 	var index = Math.floor(Math.random() * choices.length);
 	return choices[index];
 }