[OpenLayers-Users] Greetings and help (open layers layers)

[Cole Henley]

Hi all

New to this list after spending some time working on Open Layers (with
the glamorous assistance of Andrew Larcombe). Work as a webbie for a
governement heritage agency in Scotland and looking to move to OL for
the delivery of our map-based services.
I am primarily a front-end developer/designer (back and front end) but
no coding pro so able to get head round a lot of OL (love the ability
to control with CSS) but hitting a few brick walls which wanted to
sound out to the mailing list in the next couple of days if that is
okay.

First up is a question about how layers are styled and displayed in OL.
I have been thinking about using CSS to insert a transparent PNG over
the base map layer to provide some basic watermarking at the
client-side but always seems to end up with the image over the map
features, irrespective of the z-index set (looking at the OL FAQ these
should be determined through the z-index property[1]).

Can anyone advise on how best to use style (with CSS or JS) to insert
an image between the map layer and feature layers?

Thanks in advance,

Cole

[1] http://trac.openlayers.org/wiki/FrequentlyAskedQuestions#WhatisthemaximumamountoflayersIcanhaveinmyOpenLayersMap