Helping decoding filmstrip code

[sjordan]

Hello,

I'm working on code to do a sliding filmstrip. It's nearly working 100%. But I noticed when I clicked on a few of the thumbnails in the filmstrip, the resulting page was missing the beginning image in the filmstrip.

I tracked this down to line 1851 in functions.inc.php.

Can someone please educate me as to the need for (use of array_slice):

$pic_data=array_slice($pic_data,$lower_limit,$max_item)

If I comment out this line, things work fine (so far).

Also line 1829:

$lower_limit=3;

seems arbitrary

Thank you in advance.