From e04cbce07207e93a34ab1ad344644a7982b88b37 Mon Sep 17 00:00:00 2001
From: Georgy Litvinov <git@litvinovg.pro>
Date: Wed, 24 Mar 2021 19:41:29 +0100
Subject: [PATCH] Fix for collapsible metadata and doc parts js

---
 .../src/main/webapp/themes/iph/js/collapsible_elements.js   | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/webapp/src/main/webapp/themes/iph/js/collapsible_elements.js b/webapp/src/main/webapp/themes/iph/js/collapsible_elements.js
index ef2bad0b1..d661b2997 100644
--- a/webapp/src/main/webapp/themes/iph/js/collapsible_elements.js
+++ b/webapp/src/main/webapp/themes/iph/js/collapsible_elements.js
@@ -75,6 +75,9 @@ function switchExpand(inputID,elementsClass) {
 }
 function showDocumentCollapseButton(inputID){
 	var inputElement = document.getElementById(inputID);
+	if (inputElement === null){
+		return;
+	}
 	var collapseTextControl = inputElement.parentElement.querySelector('.collapseTextControl');
 	collapseTextControl.style.display = "inline";
 	var expandTextControl = inputElement.parentElement.querySelector('.expandTextControl');
@@ -83,6 +86,9 @@ function showDocumentCollapseButton(inputID){
 
 function showDocumentExpandButton(inputID){
 	var inputElement = document.getElementById(inputID);
+	if (inputElement === null){
+		return;
+	}
 	var collapseTextControl = inputElement.parentElement.querySelector('.collapseTextControl');
 	collapseTextControl.style.display = "none";
 	var expandTextControl = inputElement.parentElement.querySelector('.expandTextControl');