[jQuery] toggle and checkbox

[jQuery] toggle and checkbox


Using jquery 1.2.1 toggle:
jQuery().ready(function(){
$('#multiple').toggle(
    function(){
        $('.afield').attr('disabled',true);
        },
    function(){
        $('.afield').removeAttr('disabled');
        }
    );
});
I'm trying to toggle the disabled attribute of some text input boxes
based on a checkbox input:
<form>
<input id="multiple" type="checkbox">The Toggle</input>
<input type="text" class="afield">
</form>
However, when the checkbox is clicked, the check does not appear.
Fails in IE and Firefox.
I've tried adding code to check the box, but that fails as well.
jQuery().ready(function(){
$('#multiple').toggle(
    function(){
        $('#multiple').attr('checked',true);
        $('.afield').attr('disabled',true);
        },
    function(){
        $('#same').removeAttr('checked');
        $('.afield').removeAttr('disabled');
        }
    );
});
What's the best way to accomplish disabling text inputs with a
checkbox? Am I overthinking this?
Any help would sure be appreciated.