Clearer when archive links are N/A.

css/style.css

@@ -177,6 +177,9 @@ a[href="javascript:;"] {
 #header.bottom #header-bar.autohide #toggle-header-bar {
   cursor: n-resize;
 }
+#header-bar a.inactive {
+  color: inherit !important;
+}
 #header-bar a:not(.entry) {
   text-decoration: none;
   padding: 1px;

src/General/Header.coffee

@@ -140,8 +140,12 @@ Header =
           else
             a.textContent
 
-          if /-archive/.test(t) and href = Redirect.to 'board', {boardID}
-            a.href = href
+          if /-archive/.test(t)
+            if href = Redirect.to 'board', {boardID}
+              a.href = href
+            else
+              $.addClass a, 'inactive'
+              a.removeAttribute 'href'
 
           $.addClass a, 'navSmall' if boardID is '@'
           return a