[jQuery] [validate] URL validation failing on a valid URL.

[js]

Is there a reason why URL validation is failing on the following URL?

http://purchase.tickets.com/buy/TicketPurchase?organ_val=22031&perfcode=BD0608&perfsubcode=2008

It works fine on any other URLs I've tried.
My jQuery code looks like this:

jQuery(document).ready(function($){
    $('#theForm').validate({
        errorClass: 'validationError',
        rules: {
            url: {
                url: true
            },
            email: {
                email: true
            }
        }
    });
});