thank you Ciaran, thats clear now.
But is it also possible to use a mixed website, a one page layout and some menu item, which are not included in the one page layout?
for example i have the menu items home and about us in the one page layout, imprint in the footer menu.
Of course i dont want to show the imprint on the one page layout and if i click on it, i have a single articel in the content area.
Problem is now, when i click from the imprint page in the hornnav on about us, the link will be
http://www.XYZ.com/imprint#modulname
Its not jumping back to the one page layout, only when i click on the Home button.
I tried to it with a second menu and also with a duplicated template, but somehow it wont work. I cant find a away to solve it.