Parts of design not visible once uploaded to server

My layout is fine on my mac but once i upload it to the server parts of it are missing (the top bar for the request a quote button).
If anyone could help or give advice it would be much appreciated, I’ve never seen this before and its been bugging me for hours.
Thanks

http://www.keepitsecuritiesuk.com/

I can’t see the attachment, but the ‘Request a Quote’ button shows up fine.
What browser are you using?

Edit>

I’m seeing a bunch of 404’s:
browserdetect.js (twice)
kis_core.js (twice)
search_decorator.js (twice)
globalnav.js (twice)
tab_b.png
tab_l.png
tab_m.png
tab_r.png

Maybe you didn’t upload those files properly?