Fix race conditon

www/drive/main.js

@@ -16,12 +16,13 @@ define([
 
     var $ = window.jQuery;
     var saveAs = window.saveAs;
+
+    // Use `$(function () {});` to make sure the html is loaded before doing anything else
+    $(function () {
+
     var $iframe = $('#pad-iframe').contents();
     var ifrw = $('#pad-iframe')[0].contentWindow;
 
-
-
-
     Cryptpad.addLoadingScreen();
     var onConnectError = function (info) {
         Cryptpad.errorLoadingScreen(Messages.websocketError);
@@ -2032,5 +2033,5 @@ define([
         }
     });
 
-
+    });
 });