Fixed an issue with domManip where the incorrect document was being used to...

Fixed an issue with domManip where the incorrect document was being used to create the document fragment.

src/core.js

@@ -501,7 +501,7 @@ jQuery.fn = jQuery.prototype = {
 
 	domManip: function( args, table, callback ) {
 		if ( this[0] ) {
-			var fragment = document.createDocumentFragment(),
+			var fragment = this[0].ownerDocument.createDocumentFragment(),
 				scripts = jQuery.clean( args, this[0].ownerDocument, fragment ),
 				first = fragment.firstChild,
 				extra = this.length > 1 ? fragment.cloneNode(true) : fragment;