if( PB("nomo") ){
      @   mergeOffset = 0;
    }else{
      @   mergeOffset = railPitch-minRailPitch-mLine.w;
      @   mergeOffset = Math.min(mergeOffset, elems.mergeoffset.w);
      @   mergeOffset = mergeOffset>0 ? mergeOffset + line.w/2 : 0;
    }
    @   
    @   var canvasWidth = (nrail-1)*railPitch + node.w;
    @   canvasDiv.style.width = canvasWidth + "px";
    @   canvasDiv.style.position = "relative";
    @ }
    @ function drawBox(cls,color,x0,y0,x1,y1){
    @   var n = document.createElement("div");
    @   x0 = Math.floor(x0);

  if( !g.perm.Read && !g.perm.RdTkt && !g.perm.RdWiki ){
    login_needed(g.anon.Read && g.anon.RdTkt && g.anon.RdWiki);
    return;
  }
  url_initialize(&url, "timeline");
  cgi_query_parameters_to_url(&url);
  if( zTagName && g.perm.Read ){
    tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'", zTagName);
    zThisTag = zTagName;
  }else if( zBrName && g.perm.Read ){
    tagid = db_int(0, "SELECT tagid FROM tag WHERE tagname='sym-%q'",zBrName);
    zThisTag = zBrName;
  }else{
    tagid = 0;
  }
  if( zMark && zMark[0]==0 ){
    if( zAfter ) zMark = zAfter;
    if( zBefore ) zMark = zBefore;
    if( zCirca ) zMark = zCirca;
  }
  if( tagid>0
   && db_int(0,"SELECT count(*) FROM tagxref WHERE tagid=%d",tagid)<=nEntry
  ){
    nEntry = -1;
    zCirca = 0;
  }
  if( zType[0]=='a' ){
    tmFlags |= TIMELINE_BRIEF | TIMELINE_GRAPH;

      blob_append_sql(&sql, " AND %Q=strftime('%%Y-%%m',event.mtime) ",
                   zYearMonth);
    }
    else if( zYearWeek ){
      blob_append_sql(&sql, " AND %Q=strftime('%%Y-%%W',event.mtime) ",
                   zYearWeek);
    }
    if( tagid>0 ){
      blob_append_sql(&sql,
        " AND (EXISTS(SELECT 1 FROM tagxref"
            " WHERE tagid=%d AND tagtype>0 AND rid=blob.rid)\n", tagid);

      if( zBrName ){
        /* The next two blob_appendf() calls add SQL that causes check-ins that
        ** are not part of the branch which are parents or children of the

  if( zFilePattern ){
    if( zType==0 ){
      /* When zFilePattern is specified and type is not specified, only show
       * file check-ins */
      zType="ci";
    }
    file_tree_name(zFilePattern, &treeName, 1);
    if( fossil_strcmp(blob_str(&treeName), ".")==0 ){
      /* When zTreeName refers to g.zLocalRoot, it's like not specifying
       * zFilePattern. */
      zFilePattern = 0;
    }
  }