$(document).ready(function() { 
    // call the tablesorter plugin 
    $("#sort").tablesorter({ 
        sortList: [[1,0]] 
    }); 
}); 
// add parser through the tablesorter addParser method 
    $.tablesorter.addParser({ 
        // set a unique id 
        id: 'dates', 
        is: function(s) { 
            // return false so this parser is not auto detected 
            return false; 
        }, 
        format: function(s) { 
            // format your data for normalization 
            return s.toLowerCase().replace(/Dec/,11).replace(/Nov/,10).replace(/Oct/,9).replace(/Sept/,8).replace(/Aug/,7).replace(/July/,6).replace(/June/,5).replace(/May/,4).replace(/Apr/,3).replace(/Mar/,2).replace(/Feb/,1).replace(/Jan/,0); 
        }, 
        // set type, either numeric or text 
        type: 'numeric' 
    }); 
     
    $(function() { 
        $("#sort").tablesorter({ 
            headers: { 
                1: {
				sorter:'dates' 
                } 
            } 
        }); 
    });