[jQuery] Select box help from ajax

[mohsin]

Hello
I want to associate a select box coming from ajax to change function
of form which is defined in the page. Can anyone help me

$('#frmNewDev select').each(function()
        {

                $(this).change(function()
                {
                if(this.id != "sl_developer")
                {
                        var load_image = "<img src='http://"; + this_domain + 
"/images/
common/loading.gif' />";
                        //$('#nn').html(load_image);
                        $.get('http://' + this_domain + 
'/cp/ajax_cp_locality.php',
{cat_id: this.value},
                        function(str) {$("#nn").append(str);});
                        return false;
                }
        });
});


I m using above code for associate all select box with this function
....but select which are coming from ajax page are not associated....how
can I associate that select box with this function. thnx