From ee75f7ae8d2dbcdf2b3d5c252b826218e72eae0e Mon Sep 17 00:00:00 2001
From: Keegan McAllister <keegan@humbughq.com>
Date: Wed, 26 Sep 2012 13:39:37 -0400
Subject: [PATCH] get_{next,prev}_visible: Handle undefined argument

(imported from commit 07956fb7595e8c39fd052aaf0a16df4c3e574f8d)
---
 zephyr/static/js/zephyr.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/zephyr/static/js/zephyr.js b/zephyr/static/js/zephyr.js
index 70bdec6f35..c068592b3e 100644
--- a/zephyr/static/js/zephyr.js
+++ b/zephyr/static/js/zephyr.js
@@ -316,10 +316,14 @@ function get_all_zephyr_rows() {
 }
 
 function get_next_visible(zephyr_row) {
+    if (zephyr_row === undefined)
+        return [];
     return zephyr_row.nextAll('.zephyr_row:first');
 }
 
 function get_prev_visible(zephyr_row) {
+    if (zephyr_row === undefined)
+        return [];
     return zephyr_row.prevAll('.zephyr_row:first');
 }