TimelineGraph(tx);
  }
}());

/*
** Timeline keyboard navigation shortcuts:
**
** N - Select next (newer) entry.
** M - Select previous (older) entry.
** J - View timeline of selected entry.
** K - View details of selected entry.
** ESC - Disable keyboard navigation mode.
** ### NOTE: The keyboard shortcuts are listed in /timeline help text. ###
**
** When navigating to a page with a timeline display, such as /timeline, /info,
** or /finfo, keyboard navigation mode needs to be "activated" first, i.e. if no
** timeline entry is focused yet, pressing any of the listed keys (except ESC)
** sets the visual focus indicator to the highlighted or current (check-out)
** entry if available, or to the topmost entry otherwise. A session cookie[0] is
** used to direct pages loaded in the future to enable keyboard navigation mode

**
**  o kTMLN: ensure the correct page is opened when used from /finfo (it seems
**    the tooltip also gets this "wrong", but maybe that's acceptable, because
**    in order to be able to construct /file URLs, the information provided by
**    the timeline-data-N blocks would have to be extended).
**  o kFRST, kLAST: check if the previous/next page should be opened if focus is
**    already at the top/bottom.
**  o Tweak the focus indicator background color and opacity to be suitable for
**    the light-background skins, and override it for the dark-background skins
**    (Ardoise, Dark Mode, Eagle, Xekri).
**  o Improve scrolling the focused element into view for browsers without the
**    Element.scrollIntoViewIfNeeded() function, maybe with a Polyfill, or
**    something similar to the scrollToSelected() function in this source file.
*/
(function(){
  window.addEventListener('load',function(){
    function focusDefaultId(){

      var tb = document.getElementById('timeline-data-' + i);
      return tb ? JSON.parse(tb.textContent || tb.innerText) : null;
    }
    function timelineGetRowInfo(id){
      var ti;
      for(var i=0; ti=timelineGetDataBlock(i); i++){
        for( var k=0; k<ti.rowinfo.length; k++ ){
        if( id=='m' + ti.rowinfo[k].id ) return {
          'baseurl': ti.baseUrl,
          'filediff': ti.fileDiff,
          'hashdigits': ti.hashDigits,
          'hash': ti.rowinfo[k].h,
          'branch': ti.rowinfo[k].br };
          if( id=='m' + ti.rowinfo[k].id ) return {
            'baseurl': ti.baseUrl,
            'filediff': ti.fileDiff,
            'hashdigits': ti.hashDigits,
            'hash': ti.rowinfo[k].h,
            'branch': ti.rowinfo[k].br
          };
        }
      }
      return null;
    }
    function focusScrollToIntoViewTheFossilWay(e){
      var y = 0;
      do{

        key = ( evt.which || evt.keyCode ) | mod;
      var dx = 0;
      switch( key ){
        case kFRST: dx = -2; break;
        case kNEXT: dx = -1; break;
        case kPREV: dx = +1; break;
        case kLAST: dx = +2; break;
        case kCYCL: break;
        case kTICK: break;
        case kUNTK: break;
        case kCPYH: break;
        case kCPYB: break;
        case kTMLN: break;
        case kTMLB: break;
        case kVIEW: break;
        case kCYCL:
        case kTICK:
        case kUNTK:
        case kCPYH:
        case kCPYB:
        case kTMLN:
        case kTMLB:
        case kVIEW:
        case kDONE: break;
        default: return;
      }
      if( key==kUNTK ){
        var tid = focusTickedId();
        if( tid ){
          var gn = document.getElementById('tln'+tid.slice(1));

          var ri = timelineGetRowInfo(id);
          if( ri ){
            var hh = encodeURIComponent(ri.hash.slice(0,ri.hashdigits));
            var br = encodeURIComponent(ri.branch);
            var page;
            switch( key ){
              case kTMLN:
                page = '/timeline?m&c=' + hh;
                page = '/timeline' + ( ri.filediff ? '?m&cf=' : '?m&c=' ) + hh;
                break;
              case kTMLB:
                page = '/timeline?r=' + br +
                  ( ri.filediff ? '&m&cf=' : '&m&c=' ) + hh;
                break;
              case kVIEW:
                page = '/info/' + hh;