diff --git a/app.js b/app.js
index c1bbef1..8f572d3 100644
--- a/app.js
+++ b/app.js
@@ -74,11 +74,22 @@ function require(FN) {
     if (FN.substr(FN.length - 3) !== '.js') FN += ".js";
     if (cache[FN]) return cache[FN];
 
+    // get current script directory
+    var getCurrentScriptDirectory = function() {
+        if(typeof(WScript) !== "undefined") {
+            var path = WScript.ScriptFullName;
+            var pos = path.lastIndexOf("\\");
+            return path.substring(0, pos);
+        } else {
+            return ".";
+        }
+    };
+
     // load script file
     var FSO = CreateObject("Scripting.FileSystemObject");
     var T = null;
     try {
-        var TS = FSO.OpenTextFile(FN, 1);
+        TS = FSO.OpenTextFile(getCurrentScriptDirectory() + "\\" + FN, 1);
         if (TS.AtEndOfStream) return "";
         T = TS.ReadAll();
         TS.Close();
diff --git a/lib/shell.js b/lib/shell.js
index 767f90d..53e9853 100644
--- a/lib/shell.js
+++ b/lib/shell.js
@@ -2,7 +2,7 @@
 // Shell API
 ////////////////////////////////////////////////////////////////////////
 
-var FILE = require('lib/file');
+var FILE = require("lib/file");
 
 exports.VERSIONINFO = "Shell Module (shell.js) version 0.1";
 exports.global = global;
diff --git a/lib/system.js b/lib/system.js
index 9645999..15e68e0 100644
--- a/lib/system.js
+++ b/lib/system.js
@@ -101,9 +101,13 @@ exports.getCurrentWorkingDirectory = function() {
 
 // "console only";
 exports.getCurrentScriptDirectory = function() {
-    var path = WScript.ScriptFullName;
-    var pos = path.lastIndexOf("\\");
-    return path.substring(0, pos);
+    if(typeof(WScript) !== "undefined") {
+        var path = WScript.ScriptFullName;
+        var pos = path.lastIndexOf("\\");
+        return path.substring(0, pos);
+    } else {
+        return ".";
+    }
 };
 
 exports.getNetworkInterfaces = function() {