Change “Click to Enroll” outer

Hey,

Can you please let me know if it’s possible to change the outer of “Click to Enroll” button? It sits in: course-model.php lines 453 – 458:

			$output .= '<form method="post">
				<input type="submit" value="'.$free_button_text.'">
				<input type="hidden" name="enroll" value="1">
				<input type="hidden" name="course_id" value="'.$course->post_id.'">
			</form>';				
		}  

I would like to wrap it in a <div>