From 8ea536da45c61ce1ef0af3e96790cb31f7f3647d Mon Sep 17 00:00:00 2001
From: Daniel Sevilla <daniel@svi.nl>
Date: Tue, 17 Dec 2019 11:28:05 +0100
Subject: [PATCH] Fix JS issue in STED pages.

---
 scripts/common.js   | 6 ++++--
 sted_parameters.php | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/scripts/common.js b/scripts/common.js
index b847559c0..f6cbeb0bb 100644
--- a/scripts/common.js
+++ b/scripts/common.js
@@ -387,6 +387,8 @@ function changeStedEntryProperties(selectObj, channel) {
         var tag = tagArray[i];
         var id = tag.concat(channel);
 
+        if (document.getElementById(id) == null) continue;
+
         var inputElement = document.getElementById(id);
 
         if ( selectObj.value == 'off-confocal' ) {
@@ -400,10 +402,10 @@ function changeStedEntryProperties(selectObj, channel) {
 }
 
 
-function setStedEntryProperties( ) {
+function setStedEntryProperties(chanCnt) {
     var tag = "StedDepletionMode";
 
-    for (var chan = 0; chan < 6; chan++) {
+    for (var chan = 0; chan < chanCnt; chan++) {
         var name = tag.concat(chan);
 
         var inputElement = document.getElementsByName(name);
diff --git a/sted_parameters.php b/sted_parameters.php
index 51517657b..435079705 100644
--- a/sted_parameters.php
+++ b/sted_parameters.php
@@ -725,7 +725,7 @@ class="multichannelinput"/>
 </div> <!-- rightpanel -->
 
 <script type="text/javascript">
-    setStedEntryProperties();
+    setStedEntryProperties(<?php echo $chanCnt; ?>);
 </script>
 
 <?php