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

Question

I'm using the code below to add a logo in the header of certain pages and I'm wodering if there a way to add the logo(sublogo.jpg) to certain categories as well as "page-one", "page-two" and so on?

    <div id="header-logo" onclick="location.href='<?php bloginfo('url'); ?>'" style="cursor: pointer;" >
    <?php if (is_page(array('page-one', 'page-two', 'page-three','page-four'))) $logo_image = 'subLogo.jpg';
    else $logo_image = 'mainLogo.jpg';?>
    <img src="<?php bloginfo('stylesheet_directory'); ?>/images/<?php echo $logo_image;?>" alt="<?php bloginfo('name'); ?>" />
    </div>

Thanks,