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if(isset($fn))
{
  $new_size = getsize_minimaxi($fn,$GLOBALS['full_width'][$id_disp_bg],$GLOBALS['full_height'][$id_disp_bg],$enlarge_bg); // groessenberechnung

  $img_ext = get_ext($fn);

  if($new_size[0]==$new_size[2]&&$new_size[1]==$new_size[3]&&!in_array($img_ext,$GLOBALS['imageextensions_nohtml'])&&!in_array($img_ext,$GLOBALS['imageextensions_nosc']))
    $File=$fn;
else
 {
    if(!do_imgconvert($fn,$File,$new_size[0],$new_size[1],'jpeg',$img_ext,90,$new_size[2],$new_size[3]))
	  $File=$fn;
  }
}