$(document).ready(function() { 
    $(".sortTable").tablesorter({
        widgets: ['zebra'],
        widgetZebra: { css: ['rowColor2','rowColor1'] },
        sortList: [[0,0]],
        headers: { 2: { sorter: false}, 3: { sorter: false}, 4: { sorter: false}, 5: {sorter: false}, 6: {sorter: false} }
    }); 
});