rem: gPrefService.SetCharPref("browser.history.grouping", groupingType); 
add: gPrefService.setCharPref("browser.history.grouping", groupingType); 
context: function GroupBy(groupingType){    var outlinerBody = document.getElementById("historyOutlinerBody");    switch(groupingType) {    case "day":        outlinerBody.setAttribute("ref", "NC:HistoryByDate");        break;    case "site":        outlinerBody.setAttribute("ref", "find:groupby=hostname");        break;    case "none":        outlinerBody.setAttribute("ref", "NC:HistoryRoot");        break;    }    gPrefService.SetCharPref("browser.history.grouping", groupingType);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/ad9244c0323ffae492ced3f2ca467d76b4443c70/history.js/clean/suite/common/history/history.js