improve accessibility links

src/components/Autocomplete.vue

@@ -24,9 +24,13 @@
         :dense="$vuetify.breakpoint.mobile"
       >
       <template v-slot:append>
+        <div v-if="!$parent.error && $parent.lang=='bm,nn'">
         <a v-if="$parent.search_results.bm" href="#result0" class="accessibility_link" tabindex="0">Gå til treff i Bokmålsordboka</a>
-        <a v-if="$parent.search_results.nn" :href="'#result'+(!$parent.search_results.bm?'0':$parent.search_results.bm.length)" class="accessibility_link" tabindex="0">Gå til treff i Nynorskordboka</a>
-
+        <a v-if="$parent.search_results.nn" :href="'#result'+$parent.search_results.bm.length" class="accessibility_link" tabindex="0">Gå til treff i Nynorskordboka</a>
+        </div>
+        <div v-else>
+          <a href="#result0" class="accessibility_link" tabindex="0">Gå til hovedinnhold</a>
+        </div>
                 <a href="#top_menu" class="accessibility_link"
                    @click="$store.commit('toggle', 'menuOpen')"
                    aria-label="Hopp til toppmeny"