Sorry I don't have a lot of time to troubleshoot and test but off the top of my head here are a few things I would try:
The first (should work and be the simplest way to do it) would be to change the lang text of the buttons.
So in slideshow.php change this....
$lang_stop_slideshow = "stop slideshow";
$lang_start_slideshow = "start slideshow";
to this...
$lang_stop_slideshow = "<img src='/stop_slideshow.png'/>";
$lang_start_slideshow = "<img src='/start_slideshow.png'/>";
that should take care of the start and stop then as far as the home/beginning this is just simple html inside of
template.html
so again this...
<a href="<CURRENT_SHOW>">beginning</a>
|
<a href="/">home
</a>
becomes...
<a href="<CURRENT_SHOW>"><img src="beginning.gif"/></a>
|
<a href="/"> <img src="home.gif"/></a>
Let me know how that works for you.