diff --git a/pc4mobx/hrmSalary/components/excelEditor/extendCodeMirror.js b/pc4mobx/hrmSalary/components/excelEditor/extendCodeMirror.js
index e1b34b44..e70c6967 100644
--- a/pc4mobx/hrmSalary/components/excelEditor/extendCodeMirror.js
+++ b/pc4mobx/hrmSalary/components/excelEditor/extendCodeMirror.js
@@ -11,8 +11,8 @@ CodeMirror.extendMode("css", {
 });
 
 CodeMirror.extendMode("javascript", {
-  commentStart: "/*",
-  commentEnd: "*/",
+  commentStart: "",
+  commentEnd: "",
 // FIXME semicolons inside of for
   newlineAfterToken: function (type, content, textAfter, state) {
     if (this.jsonMode) {
@@ -37,10 +37,8 @@ CodeMirror.defineExtension("commentRange", function (isComment, from, to) {
   var cm = this, curMode = CodeMirror.innerMode(cm.getMode(), cm.getTokenAt(from).state).mode;
   cm.operation(function () {
     if (isComment) { // Comment range
-      cm.replaceRange("", to);
-      // cm.replaceRange(curMode.commentEnd, to);
-      cm.replaceRange("", from);
-      // cm.replaceRange(curMode.commentStart, from);
+      cm.replaceRange(curMode.commentEnd, to);
+      cm.replaceRange(curMode.commentStart, from);
       if (from.line == to.line && from.ch == to.ch) // An empty comment inserted - put cursor inside
         cm.setCursor(from.line, from.ch + curMode.commentStart.length);
     } else { // Uncomment range