diff --git a/lib/ace/lib/dom.js b/lib/ace/lib/dom.js
index 04f8bf5f..34549916 100644
--- a/lib/ace/lib/dom.js
+++ b/lib/ace/lib/dom.js
@@ -210,13 +210,13 @@ else
     };
 
 exports.scrollbarWidth = function(document) {
-
-    var inner = exports.createElement("p");
+    var inner = exports.createElement("ace_inner");
     inner.style.width = "100%";
     inner.style.minWidth = "0px";
     inner.style.height = "200px";
+    inner.style.display = "block";
 
-    var outer = exports.createElement("div");
+    var outer = exports.createElement("ace_outer");
     var style = outer.style;
 
     style.position = "absolute";
@@ -225,10 +225,11 @@ exports.scrollbarWidth = function(document) {
     style.width = "200px";
     style.minWidth = "0px";
     style.height = "150px";
+    style.display = "block";
 
     outer.appendChild(inner);
 
-    var body = document.body || document.documentElement;
+    var body = document.documentElement;
     body.appendChild(outer);
 
     var noScrollbar = inner.offsetWidth;