jquery settlement selector operative ie7

so i have html so:

<div id="avatar_choices">
    <label for="id_choice_0">
        <input id="id_choice_0" type="radio" name="choice" value="7" />
        <img src="someimage.jpg" />
    </label>
    <label for="id_choice_1">
        <input id="id_choice_1" type="radio" name="choice" value="8" />
        <img src="someimage2.jpg" />
    </label>
</div>

and script:

$('#avatar_choices input').hide();
$('#avatar_choices img').click(function(){
    $('#avatar_choices img').css('border', '2px plain #efefef');
    $(this).css('border', '2px plain #39c');
    $(this).siblings('input').attr('checked', 'checked');
});

the idea grant user click around settlement options, carrying comparison rhythm border colour.

this works glorious ff. reason ie once i click an image, click another image, following try click initial one, border won't change (though does selected).

edit:
my fortitude finished adult duty half accident. i altered formula due redsquare's answer:

$('#avatar_choices input').hide();
$('#avatar_choices img').click(function(){
    $('#avatar_choices img').removeclass('selected');
    $(this).addclass('selected');
    $(this).siblings('input').attr('checked', 'checked');
});

where:

#avatar_choices img.selected{border:2px plain #39c;}

go figure.