rem: var outliner = document.getElementById("historyOutliner"); 
add: var tree = document.getElementById("historyTree"); 
context: function GroupBy(groupingType){    var outliner = document.getElementById("historyOutliner");    switch(groupingType) {    case "none":        outliner.setAttribute("ref", "NC:HistoryRoot");        break;    case "site":        // xxx for now        outliner.setAttribute("ref", "NC:HistoryByDate");        break;    case "day":    default:        outliner.setAttribute("ref", "NC:HistoryByDate");        break;    }    gPrefService.setCharPref("browser.history.grouping", groupingType);}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/e0d74dbab0591d49321454ee7cde5f57910c4047/history.js/clean/suite/common/history/history.js