sortTable

function sortTable(table, colIndexes) {
  var rows, switching, i, x, y, shouldSwitch;
  switching = true;

  while (switching) {
    switching = false;
    rows = table.rows;

    for (i = 1; i < (rows.length - 1); i++) {
      shouldSwitch = false;
      x = rows[i];
      y = rows[i + 1];

      for (var j = 0; j < colIndexes.length; j++) {
        var colIndex = colIndexes[j];
        var xValue = x.getElementsByTagName("TD")[colIndex].innerHTML.toLowerCase();
        var yValue = y.getElementsByTagName("TD")[colIndex].innerHTML.toLowerCase();

        if (xValue > yValue) {
          shouldSwitch = true;
          break;
        } else if (xValue < yValue) {
          break;
        }
      }

      if (shouldSwitch) {
        rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
        switching = true;
        break;
      }
    }
  }
}

// sortTable(document.getElementById("myTable"), [0, 1]);