Loading classes after ajax call

Loading classes after ajax call

Hi all,
First time using jquery and so far I love it. But I am having a bit of
an issue and I was hoping someone could point me in right direction. I
am using the tablesorter plugin for jquery and it works fine. But my
issue is I am loading the data using ajax, and I cant seem to get my
<tr> to trigger jquery. if I fill out the data by hand in html it
works fine but when I load it with ajax nothing happens. I mean I can
see the data and the tablesorter works. Attach is my javascript,
hopefully someone can help.

$(document).ready(function(){
       $("#usedcars").tablesorter();

       $.getJSON("jsondata.php", function(data){
               $.each(data.usedcars, function(i, user){
                       var tblRow = "<tr>"
                               +"<td>"+user.stocknumber+"</
td>"
                               +"<td>"+user.make+"</td>"
                               +"<td>"+user.age+"</td>"
                               +"<td>"+user.year+"</td>"
                               +"<td>"+user.model+"</td>"
                               +"<td>"+user.engine+"</td>"
                               +"<td>"+user.trans+"</td>"
                               +"<td>"+user.color+"</td>"
                               +"<td>"+user.miles+"</td>"
                               +"<td>"+user.drive+"</td>"
                               +"<td>"+user.cost+"</td>"
                               +"<td>"+user.book+"</td>"
                               +"<td>"+user.retail+"</td>"
                               +"<td>"+user.backofbook+"</td>"
                               +"<td>"+user.location+"</td>"
                               +"</tr>"
                       $(tblRow).appendTo("#usedcars tbody");
               });
               $("#usedcars").trigger("update");
               var sorting = [[0,0]];
               $("#usedcars").trigger("sorton",[sorting]);
               $('tr').addClass('carDetails');
       });

       $(".carDetails").click(function(){
               $(this).hide();
       });
});