css issue

Hi,
how can i use different css for different language, i am using one in header file but its not working here is code

<?php if(ICL_LANGUAGE_CODE=='de'){?>
 <link rel="stylesheet" href="<?php echo get_template_directory_uri(); ?>/style12.css" type="text/css" media="screen" />
<?php }else{ ?>
<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>" type="text/css" media="screen" />
<?php } ?>

thanks

http://wordpress.org/extend/plugins/transposh-translation-filter-for-wordpress/