[jQuery] What am i doing wrong????

When I add this rule to a page with the other rules, my page stops
validating.
Works fine if I don't add it.

What this is for is a check box next to a input box.  IF the check box
is checked, the field is mandatory.

OtherCruiseLine: {
        required: function(element) {
        return $("input[name='CruiseLinesPicked'][value='Other']").is
(':checked');
}

without this rule the page validates.  With this I get an error of:
missing } after property list.

But not sure what's wrong..


Thanks!