The Scalable Grid System or scalable.gs for short, is a device independent and cross screen size web development framework. The system use a range of technologies to optimize the user experience of a website on a range of different platforms.
It follows the main ideas from the 960.gs, but incorporate and builds upon the fluidCOLUMN thoughts.
Download and have a look at the example files to get an overview of how the system works. A tutorial will be available shortly on the Design for Mobile first blog.