ventesites on "printRandomImages albums problem"

Hello
I use the printRandomImages function like this
<?php printRandomImages(2,'random','all','',80,80,NULL,'true');?>

which is $rootAlbum = '' BUT the problem is that among all albums I have created one (as explained) not published only to hold the pics i use through CSS/site image/icons etc.

The function printRandomImages pulls images from all albums included the one NOT published

how can i exclude this not published album ?

thanks

pat