The frame icon image size can't be changed.  If you need something really custom you will to create your own decorations for a window, but that is not as simple as just changing the size of an icon.  

How to customize the size of frame Icon image?
I use the following document class

\documentclass[11pt,a4paper,twoside]{scrbook}


with default header and footer (chapter/section in header and the page number in the footer)

My problem is, that the ratio between the margin of the header and the footer is not 1:2 when considering the header but not considering the footer. It is always 1:2 considering header  and footer. I already tested the commands headinclude and footexclude, but it did not solve the problem.

Does somebody have an idea how to solve this issue?
