Need help with this function..

How can I convert this function to make $path a subdomain.
Right now it’s outputting

http://blog.mysite.com/static/plugins/translator/image_map.png

I need it to be:

http://static.mysite.com/plugins/translator/image_map.png

Can anyone help me with this? My plugin folder is in a subdomain now, and the translator plugin stopped working, so I’m trying to make this plugin work now. Thanks in advance.

function gltr_get_flag_image_path($language) {
  return dirname(__file__) . '/flag_' . $language . '.png';
}

function gltr_get_flag_image($language) {
  //thanks neanton!
  $path = strstr(realpath(dirname(__file__)), 'static');
  $path = str_replace('\\', '/', $path);
  return get_settings('siteurl') . '/' . $path . '/flag_' . $language . '.png';
}

function gltr_get_flags_image() {
  $path = strstr(realpath(dirname(__file__)), 'static');
  $path = str_replace('\\', '/', $path);
  return get_settings('siteurl') . '/' . $path . '/image_map.png';
}