correctHeadlinesOffset: check for elements to work on

diff --git a/js/viewfeed.js b/js/viewfeed.js
index 05b36f2bc8896c5227cd6bf80d495795852bebc5..c38d9d55530df0bd6929013adfe5a8c20a3a1657 100644 (file)
--- a/js/viewfeed.js
+++ b/js/viewfeed.js
@@ -1793,6 +1793,8 @@ function correctHeadlinesOffset(id) {
                var container = $("headlines-frame");
                var row = $("RROW-" + id);
 
+               if (!container || !row) return;
+
                var viewport = container.offsetHeight;
 
                var rel_offset_top = row.offsetTop - container.scrollTop;