X-Git-Url: http://git.asbjorn.it/?a=blobdiff_plain;f=src%2Fcore.js;h=23b96442e961a929e01fd6f69a1a7eeb46817406;hb=957cd6fb2a2b7b8cfe9ac6b3f2b3cc2bc8163449;hp=890e9a2df87c15d40b7299ca9144ac531cd6a910;hpb=f52c4a3d5fb69f143d90f9a032e2a004c36ccae3;p=jquery.git

diff --git a/src/core.js b/src/core.js
index 890e9a2..23b9644 100644
--- a/src/core.js
+++ b/src/core.js
@@ -316,7 +316,7 @@ jQuery.extend({
 	isXMLDoc: function( elem ) {
 		// documentElement is verified for cases where it doesn't yet exist
 		// (such as loading iframes in IE - #4833)
-		return ((elem.ownerDocument || elem).documentElement || 0).nodeName !== "HTML";
+		return ((elem ? elem.ownerDocument || elem : 0).documentElement || 0).nodeName !== "HTML";
 	},
 
 	// Evalulates a script in a global context