fix JS type errors if sort_menu is disabled

diff --git a/experiments/spclient/mkws.js b/experiments/spclient/mkws.js
index 213bfbe..5d8be8d 100644 (file)
--- a/experiments/spclient/mkws.js
+++ b/experiments/spclient/mkws.js
@@ -288,8 +288,10 @@ function triggerSearch ()
 function loadSelect ()
 {
     if (document.mkwsSelect) {
-       curSort = document.mkwsSelect.mkwsSort.value;
-       recPerPage = document.mkwsSelect.mkwsPerpage.value;
+       if (document.mkwsSelect.mkwsSort)
+           curSort = document.mkwsSelect.mkwsSort.value;
+       if (document.mkwsSelect.mkwsPerpage)
+           recPerPage = document.mkwsSelect.mkwsPerpage.value;
     }
 }