// We want to use the function stripos,
// but thats only available since PHP5.
// So we cloned the function...
if(!function_exists('stripos')) {
  function stripos_clone($haystack, $needle, $offset=0) {
    return strpos(strtoupper($haystack), strtoupper($needle), $offset);
  }
} else {
// But when this is PHP5, we use the original function
  function stripos_clone($haystack, $needle, $offset=0) {
    return stripos($haystack, $needle, $offset=0);
  }
}