Graviton is a free Joomla 1.6 template by a4joomla.com with a cross browser compatibility and is compatible with IE6+, firefox, chrome, opera, safari.
Graviton has a table less portal layout which can be customized. This Joomla template has 7 module positions.
The logo text, slogan and page width can be set up from the template parameters. You can also set the right and left column width from the template parameters. You can also remove the banner image.