Show BB00_C_G automatically once viewer initializes itself

index.html

@@ -331,6 +331,18 @@ function hide_ntc_description(ntc) {
     setTimeout(() => descElem.remove(), 222);
 }
 
+/*
+ * Shows initial fragment on A- B- Z- tag
+ *
+ * @param {string} ntc - NtC code of the fragment
+ * @param {string} seq - Sequence of the fragment
+ */
+function show_initial_fragment(ntc, seq) {
+  const fragElem = document.getElementById(fragment_cell_id(mkFragId(ntc, seq), 'abz'));
+
+  abz_fragment_clicked(fragElem, ntc, seq);
+}
+
 /*
  * Displays a "tooltip" element with NtC description
  *
@@ -824,10 +836,12 @@ function init_all() {
       clearInterval(anim);
       viewerElem.removeChild(loadingElem);
 
-      redraw_molstar();
+      show_initial_fragment('BB00', 'C_G');
     }).catch(e => {
       clearInterval(anim);
-      viewerElem.removeChild(loadingElem);
+      if (viewerElem.contains(loadingElem)) {
+        viewerElem.removeChild(loadingElem);
+      }
       throw e;
     });