chore: fixes

legacy_about.html

@@ -32,21 +32,20 @@
 
   <!-- JS LOADER -->
   <script>
-  (function () {
+(function () {
 
-  function extractAboutHTML(responseText) {
+  function extractSection(html, id) {
 
-    var temp = document.createElement("div");
-    temp.innerHTML = responseText;
+    var startTag = '<section id="' + id + '">';
+    var endTag = '</section>';
 
-    var section = temp.getElementById("aboutSection");
+    var start = html.indexOf(startTag);
+    if (start === -1) return null;
 
-    if (section) {
-      return section.innerHTML;
-    }
+    var end = html.indexOf(endTag, start);
+    if (end === -1) return null;
 
-    return '<center><h2>About</h2></center>' +
-           '<center><p>Failed to load About content.</p></center>';
+    return html.substring(start, end + endTag.length);
   }
 
   function loadAbout() {
@@ -55,22 +54,30 @@
     if (!target) return;
 
     var xhr = new XMLHttpRequest();
-
     xhr.open("GET", "about.html", true);
 
     xhr.onreadystatechange = function () {
 
       if (xhr.readyState === 4) {
 
+        var html = xhr.responseText || "";
+
         if (xhr.status === 200 || xhr.status === 0) {
 
-          target.innerHTML = extractAboutHTML(xhr.responseText);
+          var section = extractSection(html, "aboutSection");
+
+          if (section) {
+            target.innerHTML = section;
+          } else {
+            target.innerHTML =
+              '<center><h2>About</h2></center>' +
+              '<center><p>Could not find aboutSection in file.</p></center>';
+          }
 
         } else {
-
           target.innerHTML =
             '<center><h2>About</h2></center>' +
-            '<center><p>Could not load about.html</p></center>';
+            '<center><p>Failed to load about.html</p></center>';
         }
       }
     };
@@ -80,14 +87,12 @@
     } catch (e) {
       target.innerHTML =
         '<center><h2>About</h2></center>' +
-        '<center><p>Error loading page</p></center>';
+        '<center><p>Request error</p></center>';
     }
   }
 
   if (window.addEventListener) {
     window.addEventListener("load", loadAbout, false);
-  } else if (window.attachEvent) {
-    window.attachEvent("onload", loadAbout);
   } else {
     window.onload = loadAbout;
   }