Sticky Footer/Header Help

[Jason Bourdette]

http://docs.telerik.com/devtools/aspnet-ajax/controls/pagelayout/how-to/how-to-make-sticky-footer-and-header

In regards to the above link. I want to have to content in the article sections take up 100% of the remaining space. I was able to do this with a radgrid by using javascript to resize the grid which works fine, but i want to do the same thing with a splitter and that is not working. Any help would be great.