My b2evolution Version: 3.3.3

I need to change the URL that is loaded when the user clicks on the header image on a blog. It defaults to reloading the main page. I think I found the operable code in the "_body_header.inc.php" file:

<div id="header" onclick="location.href='<?php $Blog->disp('url') ?>';" style="cursor: pointer;">

But my knowledge of PHP is limited. Can I insert another URL in here somewhere?

Thanks!