to change to continuous loop the easiest way to do this is to change
line 354 from:
if (($auto == "1") && ($currentPic < $number_pics-1))
to:
if ($auto == "1")
basically the reason it doesn't contuniue to loop is to save bandwith
and stop on the last image.
to change the time between images set line 121 $delay = 2; to whatever
you want the delay to be.