XF 1.3 New Nav Tab - Blank Page

Hey People,

I created a new nav tab with:

<!-- donation tab -->
<li class="navTab PopupClosed"><a href="{xen:link donate}" class="navLink">{xen:phrase donate}</a></li>

When I click on it, obviously it shows:

- Error
The requested page could not be found.

How would I add a blank page instead of the error, to only add text and HTML IFrame code?