Hi,
I would like to know how to set up a template so that if there is no sidebar content (in this case on the right), the main content div width fills up the entire content container. If there is a sidebar, the main content div is narrowed -- for example from 100% to 70% to make room for the sidebar.

Looking at the blackcandy template, the content id is always set at 70% whether or not the left navigation sidebar is present. However, I would like the main content to fill up (adjust to) the available space.

Thanks for any help,
Sam Miller