From 8fdbb7c80859ee007948dd3d45924b6d720081ff Mon Sep 17 00:00:00 2001
From: Ross <17883828+rosscg@users.noreply.github.com>
Date: Fri, 23 Dec 2022 21:09:20 +0000
Subject: [PATCH] Fix for scrolling with fixed positioning

---
 source/shadowbox.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/source/shadowbox.js b/source/shadowbox.js
index e5b4757..5c22deb 100644
--- a/source/shadowbox.js
+++ b/source/shadowbox.js
@@ -480,8 +480,10 @@
    * the window. Necessary when using absolute positioning instead of fixed.
    */
   function setContainerPosition() {
-    setStyle(containerElement, "left", documentElement.scrollLeft + "px");
-    setStyle(containerElement, "top", documentElement.scrollTop + "px");
+    if (!supportsFixed) {
+      setStyle(containerElement, "left", documentElement.scrollLeft + "px");
+      setStyle(containerElement, "top", documentElement.scrollTop + "px");
+    }
   }
 
   var troubleElementTagNames = [ "select", "object", "embed", "canvas" ];