This template doesn't work on IE7

I've noticed that this template doesn't display properly on IE7.

Logo and nav menu move to the left and I don't know how to fix it.

You can have a look at the following link:

http://ipinfo.info/netrenderer/index.php

Sselect IE7 and enter the demo's url: http://demo.gavick.com/joomla15/jan2011/

Could you, please, help me?

Thank you