2
Your site is not exactly cross browser compatible.
Use a decent browser and check your site:
http://www.mozilla.org/firefox/
http://www.opera.com/
You will notice some small glitches at the blocks. For the rest nice done, however that the iframe from the flash is too big on my screen, and it goes out of the block... Use % width to prevent things like that to happen.
Congrats with ya site, another dutch site made with xoops... yeah