Adding tagnode.css to html head

FUNCTION tagnode_menu()

in HEAD, last else block (for adding tagnode.css to html head) will fire errors when nodes load (at least for editing, assume for viewing as well); don't know what the coding guidelines/standards are exactly nowadays, but using events as a model, i assume these two lines can be replaced with:

theme_add_style(drupal_get_path('module', 'tagnode') .'/tagnode.css');

or, at least, this works, and doesn't fire errors.