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-rw-r--r--functions.js5
1 files changed, 5 insertions, 0 deletions
diff --git a/functions.js b/functions.js
index 89924fed6..46c812ed5 100644
--- a/functions.js
+++ b/functions.js
@@ -364,6 +364,11 @@ function disableContainerChildren(id, disable, doc) {
var container = doc.getElementById(id);
+ if (!container) {
+ //alert("disableContainerChildren: element " + id + " not found");
+ return;
+ }
+
for (var i = 0; i < container.childNodes.length; i++) {
var child = container.childNodes[i];