How to get a page array and category array going at the same time?

extend this line:

<?php if (is_page(array('page-one', 'page-two', 'page-three','page-four'))) $logo_image="subLogo.jpg";

with

|| is_category(array('cat-1', 'cat-2'))

so you get, for example:

<?php if (is_page(array('page-one', 'page-two', 'page-three','page-four')) || is_category(array('cat-1', 'cat-2')) ) $logo_image="subLogo.jpg";

http://codex.wordpress.org/Function_Reference/is_category