I need to select radio buttons with similar unique\_id when I select one of the existing radio buttons. 
Here is the code:

```
$('.test li input:radio').change(function () {

    var unique_id = $(this).attr('unique_id');
    $('input:radio').each(function () {

        if ($(this).attr('unique_id') == unique_id) {
            $(this).attr('checked', true);
        } else {
            $(this).attr('checked', false);
        }

    });
});

```

[Fiddle](http://jsfiddle.net/3R52F/4/)

In google chrome it is working but not always. It may work and may not work. Try to select radios many times. In Mozilla it doesn't work at all. 
What am I to do?