Non-displayed layers blocking queries to other layers

[LITTLE Nelson]

Hi all,

I am using Java Mapscript and in my application the user is able to turn
the display of layers on or off dynamically. This appears to work as the
layer turned off is no longer visible on the map image.

The problem is that a layer which is drawn on top of another layer is
masking the layer underneath even though the top layer has been turned
off. When I say turned off I mean I have set the status of that layer to
OFF (layerObj.setStatus(0)).

How do I know this is happening? If I edit the map file to not include
the top layer then they are able to query the other layer.

Perhaps I have failed to do something; I followed the PHP Mapscript
tutorials fairly closely. Any ideas or help is greatly appreciated as
this is a bit of a show stopper for me.

Cheers
Nelson



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