Disable Categories Tabs Menu On Checkout Pages

[gaffettape]

Okay, almost there! ...my current bit of code looks like this:

<!--bof-optional categories tabs navigation display-->
<?php
 if ((CATEGORIES_TABS_STATUS == '1') and (strpos($current_page_base, 'checkout') !== 0)) {
     require(DIR_WS_MODULES . zen_get_module_directory('categories_css.php'));
 } ?>
<!--eof-optional categories tabs navigation display-->

How would I edit the above to use an "array" rather than the "if page is checkout" method?

Thanks for the help so far