function __construct()
{
$this->display_data = array();
$this->display_data['extraHeadContent'] = '';
// Singleton instance
self::$instance = $this;
}
/**
* constructor, set up col data
*
* @author Andy Bennett
*/
function __construct()
{
$this->container_blocks = array();
$this->col_data = array('leftcolumn' => '', 'rightcolumn' => '', 'header' => '', 'footer' => '', 'history' => array(), 'show' => array(), 'extraHeadContent' => '', 'page_id' => URI::instance()->segment(1));
$this->col_data['cssfiles'] = array();
$this->col_data['jsfiles'] = array();
// Singleton instance
self::$instance = $this;
}