Form Rendering Problem

Form Rendering Problem

I'm just trying to create form using jQuery Mobile, but it has rendering issues.

If you open up this page and click supplier login button, supplier login form will be rendered properly:
http://noworrieshire.preflight.iddigital.com.au/

However if you open up supplier login form from direct link (http://noworrieshire.preflight.iddigital.com.au/supplier_login) or being redirected because it has no valid username/password, the supplier login form won't be rendered properly.

Can anyone spot any problems/hints with this website?