Allow Radio Buttons to be Deselected with jQuery

This code is an easy way to allow radio buttons to be deselected using jQuery. So when a radio button is selected just click it again to deselect.

// Allow radio buttons to be deselected
var radioChecked;
$('input[type=radio]').bind('mousedown', function() {
	radioChecked = $(this).attr('checked');
});
$('input[type=radio]').bind('click', function() {
	if (radioChecked) {
		$(this).attr('checked', false);
	} else {
		$(this).attr('checked', true);
	}
});