Edit:
Jeriko: I wasn't sure, I thought it might be against the forum rules to post in English - thanks for telling me. Lovely website by the way. I assume you made the template - very nice.
Simon: I made http://www.iomesus.com/. I didn't quite understand your question, is there a problem with div placement below the navigation? That may just be an issue with using float. Try adding clear:both to whatever is below the navigation. Do you have a link to the page so that I can see the problem for myself?