[TYPO3] IE6 problem

[Livius Agrippa]

Hi,

I have a big problem with my site in IE6 (and only in this browser, even 
in IE5 and IE7 the site looks good).

Please take a look at:
http://217.160.25.149/web_dynamic
The site is still in developing phase.
I should mention that I used the method from:
http://kalsey.com/2003/07/rounded_corners_in_css/
to create the corners around every content.

Any advice would be nice and very useful because today one of the 
customers had the idea to test the site in IE6 and saw the problem :).

regards,
Livius