--- a/jquery-nightly.js	2009-07-27 05:46:41.000000000 -0700
+++ b/jquery-nightly.js	2009-08-06 10:48:55.000000000 -0700
@@ -2464,7 +2464,10 @@
 					[ 0, "", "" ];
 
 				// Go to html and back, then peel off extra wrappers
-				div.innerHTML = wrap[1] + elem + wrap[2];
+				if ( jQuery.isXMLDoc(div) )
+					div = new DOMParser().parseFromString('<div>' + wrap[1] + elem + wrap[2] + '</div>', context.contentType).documentElement;
+				else
+					div.innerHTML = wrap[1] + elem + wrap[2];
 
 				// Move to the right depth
 				while ( wrap[0]-- ) {