From: John Resig <jeresig@gmail.com>
Date: Mon, 19 Jan 2009 21:57:18 +0000 (+0000)
Subject: Re-worked the logic for handling isXML detection.
X-Git-Url: http://git.asbjorn.biz/?a=commitdiff_plain;h=82e8d11c12f160fbf07a8faef5931c2f7a364a6a;p=jquery.git

Re-worked the logic for handling isXML detection.
---

diff --git a/src/selector.js b/src/selector.js
index 9fffeab..3371119 100644
--- a/src/selector.js
+++ b/src/selector.js
@@ -809,8 +809,8 @@ var contains = document.compareDocumentPosition ?  function(a, b){
 };
 
 var isXML = function(elem){
-	return elem && elem.nodeType === 9 && elem.nodeName !== "HTML" ||
-		isXML( elem.ownerDocument );
+	return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
+		!!elem.ownerDocument && isXML( elem.ownerDocument );
 };
 
 var posProcess = function(selector, context){