diff --git a/lib/std.js b/lib/std.js
index f986e3e..33b5b12 100644
--- a/lib/std.js
+++ b/lib/std.js
@@ -255,16 +255,49 @@ function alert(message) {
     if (typeof window !== "undefined") {
         window.alert(message);
     } else {
-        CreateObject("WScript.Shell").Popup(message);
+        try {
+            CreateObject("WScript.Shell").Popup(message, 0, "WelsonJS", 0);
+        } catch (e) {
+            console.error(e.message);
+        }
     }
 }
 
 function confirm(message) {
+    var result;
+    
     if (typeof window !== "undefined") {
-        return window.confirm(message);
+        result = window.confirm(message);
     } else {
-        CreateObject("WScript.Shell").Popup(message);
+        try {
+            result = (CreateObject("WScript.Shell").Popup(message, 0, "WelsonJS", 4) == 6);
+        } catch (e) {
+            console.error(e.message);
+            result = false;
+        }
     }
+    
+    return result;
+}
+
+function prompt(message, _default) {
+    var result;
+    
+    if (typeof window !== "undefined") {
+        result = window.prompt(message);
+    } else {
+        try {
+            result = CreateObject("WelsonJS.Toolkit").Prompt(message);
+        } catch (e) {
+            console.error(e.message);
+            if (typeof _default !== "undefined") {
+                result = _default;
+                console.warn("Use default value:", _default);
+            }
+        }
+    }
+    
+    return result;
 }
 
 function parseEnv(s) {
@@ -551,8 +584,9 @@ exports.Storage = StdStorage;
 
 exports.alert = alert;
 exports.confirm = confirm;
+exports.prompt = prompt;
 
-exports.VERSIONINFO = "WelsonJS Standard Library (std.js) version 0.8.12";
+exports.VERSIONINFO = "WelsonJS Standard Library (std.js) version 0.8.13";
 exports.AUTHOR = "abuse@catswords.net";
 exports.global = global;
 exports.require = global.require;