ChildView' height follow ParentView's height which follow Another ChieldView's height in css

I have a homepage madsgadeberg.dk where i have a MenubarView to the left and a ContentView to the right. Both are childrens to a ParentView. Direct link to page: http://ift.tt/1CvCKeA. Content of ContentView changes by selecting page from the menu, like you would expect a menu to function.

What i would like to achieve: ParentView should always be minimum 100% and stretch acording to my Contentview.

min-height: 100%;
height: auto;

MenubarView (left child) should always follow the height of the parent.

height: 100%;

ContentView (right child) should fit its content.

height: auto;

If i do as above my MenubarView's height shrinks to zero.

What is the correct way to achieve this?