diff --git a/lib/www/client/source/src/main.js b/lib/www/client/source/src/main.js
index 7f7e9a1..153c164 100644
--- a/lib/www/client/source/src/main.js
+++ b/lib/www/client/source/src/main.js
@@ -46,6 +46,12 @@ new Vue({
 
   methods: {
 
+    async sleep (ms = 0) {
+      return await new Promise( (resolve) => {
+        setTimeout( resolve, ms );
+      });
+    },
+
     markdown (value) {
       return markdown(value);
     },