     @_pages = null
     @_highlighter = null
 
-    focusAnnotationId = null
-
   _viewport: (page) =>
     scale = SCALE
     page.pdfPage.getViewport scale

    Notify.debug "Destroying publication #{ @_id }"

    currentPublication = null

    pages = @_pages or []
    @_pages = null # To remove references to pdf.js elements to allow cleanup, and as soon as possible as this disables other callbacks

    @_pagesDone = 0
    @_pages = []
    @_highlighter = new Highlighter @_$displayWrapper

    focusAnnotationId = null

    PDFJS.getDocument(@url(), null, null, @_progressCallback).then (@_pdf) =>
      # Maybe this instance has been destroyed in meantime
