InsertNode does not use theme_ functions for HTML output

The function _insert_node_replacer should make use of theme_ functions wherever HTML output is generated. For instance, the return:

return '<div class="insert-node insert-node' . $insert_node_count . '">' . $output . '</div>';

could be:

return theme('insert_node_result', $output, $insert_node_count);

and then another function defined:

function theme_insert_node_result($output, $insert_node_count) {
  return '<div class="insert-node insert-node' . $insert_node_count . '">' . $output . '</div>';
}

This way, I could make my own theme override - like if i didn't want that div around the results, I'd define in my theme's template.php:

mytheme_insert_node_result($output, $insert_node_count) {
  return $output;
}

I may have made mistakes - but that's the general idea. This should be done everywhere HTML output is generated - either as a few big functions or several smaller ones.