move obsolete browser warning from home1.css to home1.js

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

groups/home/bootstrap5/home1.css

@@ -608,16 +608,6 @@
   });
 </script>
 
-<script type="text/javascript">
-  window.onload = function () {
-    <!-- display the error message if feature detection flags old browser -->
-    if (window.isES6 == false) {
-      document.getElementById("obsolete_browser_alert").innerHTML =
-        '<div class="alert alert-danger" role="alert" style="text-align: center;"><strong>WARNING! Unsupported browser!</strong><br />It looks like you\'re using an old browser.<br />This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge.<br />If you continue with this browser, many parts of this site will not work and you will see unexpected results.</div>';
-    }
-  };
-</script>
-
 <!-- FontAwesome -->
 <script
   src="https://kit.fontawesome.com/4c28f38a07.js"

groups/home/bootstrap5/home1.js

@@ -33,6 +33,14 @@
   } catch (e) {}
 })();
 
+// Display warning if ES6 detection failed
+window.onload = function () {
+  if (window.isES6 == false) {
+    document.getElementById("obsolete_browser_alert").innerHTML =
+      '<div class="alert alert-danger" role="alert" style="text-align: center;"><strong>WARNING! Unsupported browser!</strong><br />It looks like you\'re using an old browser.<br />This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge.<br />If you continue with this browser, many parts of this site will not work and you will see unexpected results.</div>';
+  }
+};
+
 const hamburgerComponent = {
   template: `<div class="bigger-fancy-text">
     <i v-bind:class="item.icon" aria-hidden="true"></i>