<script>
function sortTable() {
  var table, rows, switching, i, x, y, shouldSwitch;
  table = document.getElementById("myTable");
  switching = true;
  /*Make a loop that will continue until
  no switching has been done:*/
  while (switching) {
    //start by saying: no switching is done:
    switching = false;
    rows = table.rows;
    /*Loop through all table rows (except the
    first, which contains table headers):*/
    for (i = 1; i < (rows.length - 1); i++) { //start by saying there should be no switching: shouldSwitch = false; /*Get the two elements you want to compare, one from current row and one from the next:*/ x = rows[i].getElementsByTagName("TD")[0]; y = rows[i + 1].getElementsByTagName("TD")[0]; //check if the two rows should switch place: if (x.innerHTML.toLowerCase() > y.innerHTML.toLowerCase()) {
        //if so, mark as a switch and break the loop:
        shouldSwitch = true;
        break;
      }
    }
    if (shouldSwitch) {
      /*If a switch has been marked, make the switch
      and mark that a switch has been done:*/
      rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
      switching = true;
    }
  }
}
</script>