[dxflw]

In the page you like to add the image find $navbar and below add:

<center>
<a href=" THE URL ON FACEBOOK GROUP HERE " target="_blank">
<img src=" THE URL OF THE IMAGE HERE " border="0" title=" TYPE A DESCRIPTION HERE "></a>
</center>

If you like extra size for the image replace that code:

<img src=" THE URL OF THE IMAGE HERE " border="0" title=" TYPE A DESCRIPTION HERE ">

with this:

<img src=" THE URL OF THE IMAGE HERE " width="XXX" height="XXX" border="0" title=" TYPE A DESCRIPTION HERE ">

And change the XXX to the desiert number of pixels i.e: width="728" height="90"