We are working on a website – http://wordpressboon.com/portercreek
Client want it that it should increase size or shrink in size as per screensize or browser window. No vertical or horizontal scrollbar should appear. See this sample- http://screencast.com/t/AeBLcyokW
or http://templatesden.com/TF/WPCMS/spasalon/
The above site is decreasing its size if you decrease your browser window size