[jQuery] [validate] $.valid() issue with IE6

[Up-Works]

$('input#step2').livequery('click',function() {
 if($('form#order').valid()) {
    $('div#stepOne').hide();
    $('div.step').html('Step<br\/>Two');
    $('div#stepTwo').show();
 }
return false;
});

The line - if($('form#order').valid()) {

Cause IE 6 to throw and error stating 'Object doesn't  support this
property or method.

Works in IE7 , FF+ and Safari+

Thank you in advance