a next button

[thezign]

I hope someone can help me with this problem.

I have a list generated from a mysql db that is alphabetically sorted. When I click on a link from that list it displays the detailed information of that link.

When I am in this detail-page I want to go to the next item from the previous list.

How do I do this?? I can't go from id=13 to id=14 as that is not sorted on alphabet.

Please help!!
For a detailled view of the problem visit:
http://www.thezign.nl/auto/lijstopmerk.php
(click on the picture to go to the detail-page)

[Wien]

I guess the best way is to store all your items alphabetically sorted in an array and let's say you're currently displaying item[$i] so the previous one is simply item[$i-1] and the next item[$i+1]