RapidGrid is a tool which aims to allow for quick creation of grid layout for HTML pages. It supports systems like 960 Grid System and extends them somewhat. You can create multiple layout strips and columns, change their width and the sequence in which they appear in page markup.
RapidGrid is built using jQuery and jQuery UI as well as some elements of Bootstrap from Twitter.
Fork me on GitHub: http://github.com/mariusz-alef-bak/RapidGrid