Module position 'sidebar' not aligning to top

Hi All.
I gave up trying to find out myself why my sidebar content is not positioned on top like it should. Tried to find a solution online for a few days now but failed to find an answer. Can someone please have a look at my (test)site? (http://odv.vision4all.nu).
As you will see the sidebar box 'Openingstijden' shows below the first module (top1) where I want it to show right below position 'header'.
Hope someone can help out here.
Thanks in advance. Paul

Please move content from top1 position to mainbody position and you should get desired look.

Hi Cyberek. That did the trick. Thanks! Have a great evening.

Is there anything else I can help you with regarding this topic?