diff --git a/resources/externs/main.js b/resources/externs/main.js
index 1e3d5eb8c..b8422407f 100644
--- a/resources/externs/main.js
+++ b/resources/externs/main.js
@@ -28,5 +28,28 @@ var TopLevel = {
   "getBBox": function() {},
   "addEventListener": function() {},
   "postMessage": function() {},
-  "data": function() {}
+  "data": function() {},
+  "querySelector": function() {},
+  "outerHTML": function() {},
+  "tagName": function() {},
+  "appendChild": function() {},
+  "createElement": function() {},
+  "createElementNS": function() {},
+  "viewBox": function() {},
+  "baseVal": function() {},
+  "x": function() {},
+  "y": function() {},
+  "width": function() {},
+  "height": function() {},
+  "type": function() {},
+  "stopPropagation": function() {},
+  "preventDefault": function() {},
+  "innerText": function() {},
+  "target": function() {},
+  "value": function() {},
+  "click": function() {},
+  "result": function() {},
+  "readAsText": function() {},
+  "src": function() {},
+  "readAsDataURL": function() {}
 };