[OpenLayers-Users] event when layer opacity change

[Steve.Toutant at inspq.qc.ca]

Hi,
When a layer's opacity is changed, I would like to assign the new opacity 
to another layer. I found the map event layerchange, but is there an event 
on the layer? That would be easier to use to me.
I'm using geoext slider to change the opacity
thanks
steve


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