Connection Time Out Message?

["Jörg Thomsen (MapMedia GmbH)"]

Hi,

I would like to generate an inimage error-message like 'service xy is 
not available" if a wms server does not answer or does answer to late, like

wms_connectiontimeout 30
wms_connectiontimeout_message  service is not available

So that the user knows, that there should be more information in the map.

Any idea?

regards, Jörg