Expresso Leaderboard Ranking

$(document).ready(function(){
  var re = /(\S+) of (\S+)/;
  $("td:contains(' of ')").each(function() {
    var matches = re.exec($(this).text());
    var x = parseInt(matches[1].replace(',',''));
    var y = parseInt(matches[2].replace(',',''));
    var p = Math.round((y-x)/y*100);
    if(x==1){
      $(this).append('<br>(<font color="green">first</font>)');
    } else {
      if(x==y){
        $(this).append('<br>(<font color="red">last</font>)');
      } else if(p<50){
        $(this).append('<br>(<font color="red">bottom ' + p + '%</font>)');
      } else if(p>=50 && p<90){
        p = 100 - p;
        $(this).append('<br>(<font color="orange">top ' + p + '%</font>)');
      } else {
        p = 100 - p;
        $(this).append('<br>(<font color="green">top ' + p + '%</font>)');
      }
    }
  });
});