Index: src/core.js
===================================================================
--- src/core.js	(revision 3541)
+++ src/core.js	(working copy)
@@ -10,8 +10,8 @@
  */
 
 // Map over jQuery in case of overwrite
-if ( typeof jQuery != "undefined" )
-	var _jQuery = jQuery;
+if ( typeof window.jQuery != "undefined" )
+	var _jQuery = window.jQuery;
 
 var jQuery = window.jQuery = function( selector, context ) {
 	// If the context is a namespace object, return a new object