qTranslate Language Selector

Hi,

I added qTranslate to my site and added the code to my header.
Now it displays the languages in text like this: “English / Nederlands”
But I want it to display the short codes like this: “EN / NL”

This is the code for the language selector:
<?php echo qtrans_generateLanguageSelectCode('text'); ?>

I assume I should change “text” to something else but I don’t know what. Help please!

Thanks…