[TYPO3-dev] How to transform code to use sprites

[Georg Ringer]

Hi,

I am updating some extensions and want to switch to sprites.

If I got the code like this
--------------
'<img src="' . $GLOBALS['BACK_PATH'].'gfx/i/' .
($r_row['orig_recipient'] < 0 ? 'tc_mails_group.gif':'tc_mails.gif')
--------------

How to I find out how to get the correct sprite names of those icons?

Thanks a lot
Georg