diff --git a/app.js b/app.js
index 3facc63..4576b08 100644
--- a/app.js
+++ b/app.js
@@ -127,6 +127,14 @@ app.get('/webapp/index.php', async (req, rsp) => {
   }
 });
 
+function post(...args) {
+  app.post(...args);
+}
+
+function addStaticDirectory(path, dir) {
+  app.use(path, express.static(dir));
+}
+
 registerHandler('Ops', 'selfChecking', async (req, rsp) => {
   if (rsp) {
     utils.rspOk(rsp);
@@ -135,10 +143,6 @@ registerHandler('Ops', 'selfChecking', async (req, rsp) => {
   }
 });
 
-function post(...args) {
-  app.post(...args);
-}
-
 app.use(bodyParse.json({ limit: '50mb'}));
 app.use(bodyParse.urlencoded({ limit: '50mb', extended: true}));
 
@@ -152,3 +156,4 @@ exports.addMiddleware = addMiddleware;
 exports.useMiddleware = useMiddleware;
 exports.registerDb = registerDb;
 exports.getDbConn = getDbConn;
+exports.addStaticDirectory = addStaticDirectory;