Help with margin between backround & main content

Hi rdellconsulting,
Thanks for the help;-).
Unfortunately I can not seem to find anything that can help me with this. I want the “tc-header” to “follow” the size of the slider and the rest (sidebar & Articles). I eventually tried everything, but can not really find a solution to it. I’ve tried messing around with a workaround, so I can almost get to work – but only works until I “resizer the browser window.” Here’s a link so that you may “get an idea of what im trying to”
Hope you can see (get a picture) what i want 😉

http://edisk.dk/sanne