Safari vs Firefox layout issue

Edit: I didn't realise that this support request was going to go public. Thanks for the warning. Anyway, links modified.

Hi there,

I've only just installed the plugin therefore haven't explored much, however I'm already having an issue with the layout. It's possible that this is related to my theme - not sure.

Anyway,
Safari: http://mcdowall.co.nz/safari.png
Firefox: http://mcdowall.co.nz/firefox.png

I prefer the wide Firefox look, so something's gone wrong with Safari. The theme's template is the full width one.

One other thing, is it possible for us to easily customise the booking form? I've worked on it a little to ask for different information, but it's not exactly ideal and we'd like more fields.

Cheers,
James