Center Column height shrinking

[Kim]

If your goal is to have the center column background color fill to the bottom then you need to add a class to this section of tpl_main_page.php

<td valign="top" class="myNewClass'>
<!-- bof breadcrumb -->
<?php if (DEFINE_BREADCRUMB_STATUS == '1' || (DEFINE_BREADCRUMB_STATUS == '2' && !$this_is_home_page) ) { ?>
<div id="navBreadCrumb"><?php echo $breadcrumb->trail(BREAD_CRUMBS_SEPARATOR); ?></div>
<?php } ?>
<!-- eof breadcrumb -->

Then define your new class in the stylesheet.