Using a meta tag for IE will not help in this case because the page looks poorly in IE 8 as well. There are at least two problems with the page, probably more. It doesn't have a valid DOCTYPE. It does, but not as the first thing. The first thing on the page is an opening <html> tag:
As you can see it has two of those, that's invalid. So validating the page would be a good idea:
var _gaq = _gaq || ;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script'); s.parentNode.insertBefore(ga, s);
<meta name="keywords" content="maszyny . . .
The other problem I see with IE is the use of text-align: center for the body in the ie.css stylesheet. This can actually cause more problems than it fixes. Use margin: 0 auto; to center individual elements that have width, and text-align center only for individual elements containing text that you want centered. The margin: 0 auto; won't work in IE however, until you have a valid DOCTYPE as the very first thing in the page's source code.