diff --git a/web/documentserver-example/nodejs/views/editor.ejs b/web/documentserver-example/nodejs/views/editor.ejs
index 2bf319105..df25819b1 100644
--- a/web/documentserver-example/nodejs/views/editor.ejs
+++ b/web/documentserver-example/nodejs/views/editor.ejs
@@ -412,7 +412,7 @@
             if (config.type !== "mobile") {
                 return;
             }
-            var wrapEl = document.getElementsByClassName("form");
+            var wrapEl = document.getElementsByTagName("iframe");
             if (wrapEl.length) {
                 wrapEl[0].style.height = screen.availHeight + "px";
                 window.scrollTo(0, -1);
diff --git a/web/documentserver-example/nodejs/views/wopiAction.ejs b/web/documentserver-example/nodejs/views/wopiAction.ejs
index 82a09407e..daa5dc2e9 100644
--- a/web/documentserver-example/nodejs/views/wopiAction.ejs
+++ b/web/documentserver-example/nodejs/views/wopiAction.ejs
@@ -70,6 +70,29 @@
         frameholder.appendChild(office_frame);
 
         document.getElementById('office_form').submit();
+
+        var _onMessage = function(msg) {
+            var data = msg.data;
+            if (Object.prototype.toString.apply(data) !== '[object String]' || !window.JSON) {
+                return;
+            }
+
+            var cmd = JSON.parse(data);
+            if (cmd) {
+                if ( cmd.MessageId == 'App_LoadingStatus' ) {
+                    var fixSize = function() {
+                        document.getElementsByTagName("iframe")[0].style.height = window.innerHeight + "px";
+                    }
+
+                    fixSize();
+                    window.addEventListener("orientationchange", fixSize);
+                }
+            }
+        };
+
+        window.addEventListener('message', function (e) {
+            _onMessage(e);
+        });
     </script>
 
 </body>