Blackberry 4.6 is capable of finding elements that are no longer in the DOM via getElementById. It only appears to happen when the node has been inside of a cloned Document Fragment. Fixes #6963.

Author: jeresig

sizzle.js

@@ -391,7 +391,9 @@ var Expr = Sizzle.selectors = {
 		ID: function(match, context, isXML){
 			if ( typeof context.getElementById !== "undefined" && !isXML ) {
 				var m = context.getElementById(match[1]);
-				return m ? [m] : [];
+				// Check parentNode to catch when Blackberry 4.6 returns
+				// nodes that are no longer in the document #6963
+				return m && m.parentNode ? [m] : [];
 			}
 		},
 		NAME: function(match, context){