Dynamically load article template based on category ID

gistfile1.txt

switch ($this->item->catid)
{
	case('9'):
	case('11'):
		echo $this->loadTemplate('inset');
		break;
	case('10'):
		echo $this->loadTemplate('news');
		break;
	default:
		echo $this->loadTemplate('article');
		break;
};