JQuery :: Inserted Ajax Dropdown Not Fade On Form Wizard

I'm using formwizard, and I tried to insert a dropdown into the form by putting this jquery code
$('#aog').change(function() {
if ($('#aog').val()==='yes') {
$.ajax ({
type: "POST",
url: "<?php echo base_url(); ?>index.php/register/mortgator",
data: "aog=" + $('#aog').val(),
success: function(msg) {
$("#bank").html(msg);
$("#signupForm").formwizard("update_steps");
}}); //end of ajax
} else {
$("#bank").html('');
}});
//end of aog event

And this php code
function mortgator(){
$this->load->model('MBank');
$q = $this->MBank->getbanklist();
echo '<label for="mortgator">Mortgator:</label><br/>';
echo '<select name="mortgator" id="mortgator" class="required ui-wizard-content ui-helper-reset ui-state-default error">';
echo '<option value="">Select a Mortgator</option>';
foreach ($q as $key => $list){
echo '<option value="'.$list['bankID'].'">'.$list['bankName'].'</option>';
} echo '</select>';
}
It is working, except that when you click next, other form input boxes would fade, but this input inserted via ajax would not have a fade animation. That's why I added this line of code to the html tag ui-wizard-content ui-helper-reset ui-state-default error but it appears that that does not work.