multi-language - need a little hand with snippet

<?php
// get languages info
	$tv = $modx->getTemplateVar('languages', "", $modx->documentIdentifier);
	$languages = $tv['value'];
	 
	if (!strlen($languages))
	{
	  return "";
	}
	 
	$langnames = array(
		  "en" => "English",
		  "de" => "Deutsch",
		  "fr" => "Français",
		  "it" => "Italiano"
	  );
	 
	$output = "";
	 
	// get entries in languages list
	$entries = explode(",", $languages);
	// loop through language entries
	for ($e = 0; $e < count($entries); $e++)
	{
	  // seperate into lang code and target document id
	  list($lang, $targetid) = explode("=", $entries[$e]);
	  $image = '<img src="assets/images/'.$lang.'.gif" width="16" height="11" border="0" alt="'.$langnames[$lang].'" />';
	  if (strlen($output))
	  {
		$output .= ' ';
	  }
	  //$output .= '<a href="'.$modx->makeUrl($targetid).'">'.$image.'</a>';
$output .= '<li><a href="'.$modx->makeUrl($targetid).'" title="'.$langnames[$lang].'"><span>'.strtoupper($lang).'</span></a></li>';

	}
	 
	return $output;
?>