[jQuery] ui.datePicker and clone() issue

[jQuery] ui.datePicker and clone() issue


hi,
In a form, I'm cloning a number of times a portion of html that
displays a sub form. Now, that subform contains date input fields
which *should* display the date picker plugin. The plugin works fine
on other input dates, but not on the cloned ones.
I tried previously with the masked Plugin and i also had issues with
it, so i suspect i'm the faulty one here...
Any idea what i 'm doing wrong?
Here is the cloning code if that can help:
$.datepicker.setDefaults({
showOn: 'both',
buttonImageOnly: true,
buttonImage: '../_js/jquery_plugins/ui/datePicker/3.2/
calendar.gif',
buttonText: 'Calendar',
        dateFormat: 'dd/mm/yy',
        speed: 'fast'
});
$(".isADate").datepicker();
// more code .. then comes this:
$('#weekamount').bind("change", function(){
$weeks = $(this).val();
$('.newWeek').remove();
for (i = 0; i < $weeks; i++) {
$('#templateUI legend').text('Semaine ' + parseInt(i +
1));
$
('#templateUI').clone(true).fadeIn("slow").addClass('newWeek').attr('id',
'#templateUI' + i).appendTo('#addWeekUIholder').css({
backgroundColor: "yellow"
}).animate({
backgroundColor: 'white'
}, 1000);
//$(".newWeek .isADate").mask("99/99/9999");
     $(".isADate").datepicker();
}
});