var commanderHistory = GM_getValue(Username + "_commander", "");
    commanderHistory = commanderHistory.replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,'').replace(/\s+/g,' ');

    var previousCommanders = commanderHistory.split(" ");
    var lastCommander = previousCommanders[previousCommanders.length - 1];

    var commanderTimes;
    var previousTimes;

    if (commander != lastCommander) {
        commanderHistory = commanderHistory + " " + commander;
        GM_setValue(Username + "_commander", commanderHistory);

        var timeStamp = getTimeStamp();

        commanderTimes = GM_getValue(Username + "_comm_times", "").trim();

        if (commanderTimes == "") {
            commanderTimes = commanderTimes + timeStamp;
        } else {
            commanderTimes = commanderTimes + ":::" + timeStamp;
        }

        GM_setValue(Username + "_comm_times", commanderTimes);
    }

    var commanderTable = "";

    commanderTable += '<table id="table_commanders" class="table_lines" width="100%" cellspacing="0" cellpadding="6" border="0">';
    commanderTable += ' <tbody>';
    commanderTable += '     <tr style="cursor: pointer;">';
    commanderTable += '         <th align="center" colspan="2">Commander History</th>';
    commanderTable += '     </tr>';

    commanderTable += '     <tr>';
    commanderTable += '         <th class="subh" align="left">Commander</th>';
    commanderTable += '         <th class="subh" align="right">Date</th>';
    commanderTable += '     </tr>';

    commanderTable += ' </tbody>';
    commanderTable += '</table>';

    var toReplace = 'officers_nav()\n</script>';
    var replaceWith = toReplace + '\n' + commanderTable;

    document.body.innerHTML = document.body.innerHTML.replace(toReplace, replaceWith);

    var i;

    var entryCommanders = GM_getValue(Username + "_commander", "").replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,'').replace(/\s+/g,' ').split(' ');
    var entryTimes = GM_getValue(Username + "_comm_times", "").replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,'').replace(/\s+/g,' ').split(':::');

    var len = entryCommanders.length;

    for (i = 0; i < len; i++) {
        var currComm = entryCommanders[i];
        var currTime = entryTimes[i];

        if (currTime.replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,'').replace(/\s+/g,' ') == "") {
            currTime = '&nbsp;';
        }

        var newRow = "";

        newRow += '<tr>';
        newRow += ' <td align="left"><b>' + currComm + '</b></td>';
        newRow += ' <td align="right">' + currTime + '</td>';
        newRow += '</tr>';

        document.getElementById('table_commanders').insertRow(-1).innerHTML = newRow;
    }