fix for #1165 (Reference strip not updated for initially set page)

src/viewer.js

@@ -530,6 +530,8 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
                         prefixUrl:   this.prefixUrl,
                         viewer:      this
                     });
+
+                    this.referenceStrip.setFocus( this._sequenceIndex );
                 }
             }