$this->project_header = new ContentProvider('main', 'project_header');
$this->project_header->set('sub_nav', "");
$this->page->append('content', $this->project_header);
$this->project_header = new ContentProvider('main', 'project_header');
$this->project_header->set('sub_nav', "");
$this->page->append('content', $this->project_header);