Make sure that the script is removed only if it's actually in the page still. Fixes...

diff --git a/src/ajax.js b/src/ajax.js
index 9a843022ce7d0fb1476ec48fa37c54c32d0aa695..adae6aec7493b52bcd35a40b78d129affdfce38c 100644 (file)
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -296,7 +296,9 @@ jQuery.extend({
 
                                                // Handle memory leak in IE
                                                script.onload = script.onreadystatechange = null;
-                                               head.removeChild( script );
+                                               if ( head && script.parentNode ) {
+                                                       head.removeChild( script );
+                                               }
                                        }
                                };
                        }