Oh ok, I checked the module and I don't see any lone ie6 or ie7. But what you could do is open up yours and just set them to php variables to fix the errors. So just add the following to the top of the module:
Find:
<?php
/**
@version 1.0: mod_S5_tabshow
Author: Shape 5 - Professional Template Community
Available for download at www.shape5.com
Copyright Shape 5 LLC
*/
Replace with:
<?php
/**
@version 1.0: mod_S5_tabshow
Author: Shape 5 - Professional Template Community
Available for download at www.shape5.com
Copyright Shape 5 LLC
*/
$ie6 = "";
$ie7 = "";