Update JS

functions.js

 let slideNumber = 0;
 
-const newsImageSources = ['../img/nasa_news_1.jpg', '../img/nasa_news_2.jpg', '../img/nasa_news_3.jpg'];
 const newsImageSources = ['../img/nasa_news_1.jpg', '../img/nasa_news_2.jpg', '../img/nasa_news_3.jpg'];
 const newsTitles = ['Space Station', 'Earth', 'NASA Goddard'];
 const newsSubtitles = ['Expedition 48 Crew Lands Safely on Earth', 'NASA Announces Summer 2023 Hottest on Record', 'NASA\'s Webb Snaps Supersonic Outflow of Young Star'];
 
-document.addEventListener("DOMContentLoaded", function() {
-    onload();
-});
 document.addEventListener("DOMContentLoaded", function() {
     onload();
 });
@@ -18,8 +14,6 @@ function onload() {
     setInterval(slideImage, 30000);
 
     setHoverForOverlay();
-
-    setHoverForOverlay();
 }
 
 function slideImage() {