--- a/includes/clientside/static/login.js	Sun Jul 20 13:32:04 2008 -0400
+++ b/includes/clientside/static/login.js	Tue Jul 22 14:49:18 2008 -0500
@@ -321,7 +321,7 @@
       {
         // parse response
         var response = String(ajax.responseText + '');
-        if ( response.substr(0, 1) != '{' )
+        if ( !check_json_response(response) )
         {
           handle_invalid_json(response);
           return false;