From 33505b8369bea813f7916cdeda3e86b484f546b4 Mon Sep 17 00:00:00 2001
From: Rory Mulligan <rmulligan@sitepen.com>
Date: Fri, 24 Feb 2017 06:32:24 -0700
Subject: [PATCH] fixes #18973, resolve cross-domain computed style issue and
 regression

---
 dom-style.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/dom-style.js b/dom-style.js
index b024ef589c..f2c7a4b375 100644
--- a/dom-style.js
+++ b/dom-style.js
@@ -45,10 +45,12 @@ define(["./sniff", "./dom", "./_base/window"], function(has, dom, win){
 		};
 	}else{
 		getComputedStyle = function(node){
-			var dv = node.ownerDocument.defaultView,
-				w = dv.opener ? dv : win.global.window.parent;
-			return node.nodeType == 1 /* ELEMENT_NODE*/ ?
-				w.getComputedStyle(node, null) : {};
+			if(node.nodeType === 1 /* ELEMENT_NODE*/){
+				var dv = node.ownerDocument.defaultView,
+					w = dv.opener ? dv : win.global.window;
+				return w.getComputedStyle(node, null);
+			}
+			return {};
 		};
 	}
 	style.getComputedStyle = getComputedStyle;