[jQuery] simple function not working on IE

[jQuery] simple function not working on IE


Look at this : http://andriel.info/checkout/checkout2.html
When I click continue button (on the left side). It has to open a div
under the billing information. But on IE it doesnt work, FF is fine.
This is the script
    function navigation(id) {
        id2 = id - 1;
        $('#content'+id2).hide();
        $('#content'+id).show();
        $('#title'+id).removeClass();
        $('#title'+id).addClass('check_head');
        $('#title'+id2).removeClass();
        $('#title'+id2).addClass('check_body');
    }
    $('button[id=continuestep2]').click(function(){
        navigation(2);
        ck_method = $('input[name=checkout_method]:checked').val();
        if (ck_method == 'register') {
            $('#register-customer-password').css('display','inline-
table');
         } else {
            $('#register-customer-password').hide('slow');
         }
    });
anybody know how this error come from?
Thank you before