limit categories visible to users

I have copied the categories listing(from sidebar file) to the header file like this –

<?php wp_list_categories(‘title_li=&show_count=0&category_before=&category_after=’); ?>

in order to show it as a horizontal menu. I am using crafty cart template.
But i want to limit it so that it won’t show more than 5 cats otherwise it starts to go onto a second line. This is even though i will proably want to create more cats in time but maybe have them display altogether on a main cats page.
Is this possible; to limit the cats showing to 5 where i have them? and also to have all cats display on a main cats page?