[OpenLayers-Users] registering a click on a marker

[Tara Athan]

I am confused about how to register an event on a marker.
I have a marker layer at a coarse resolution, with markers assigned to 
different variables.
I would like to have a click on the marker cause  a zoom in to that 
location, plus a replacement of the makers with a new set of markers 
that show more detail for that location. I am using code like this

        function handleMarkerClickEU(evt) {
        map.setCenter(new OpenLayers.LonLat(13.000000,51.000000), 3);
        var vols_cyball = new OpenLayers.Layer.Markers( 'volunteers 
living in Europe (balloons)');
        var vols_cynumb = new OpenLayers.Layer.Markers( 'volunteers 
living in Europe (numbers)');
        var vols_cytext = new OpenLayers.Layer.Text( "text", {location: 
"../data/volsTextCYEU_utf8.csv"});       
        map.addLayers([vols_cyball, vols_cynumb, vols_cytext]);
        <?php include 'volsBalloonsAndNumbersCYEU_utf8.php';  ?>
       
        map.removeLayer(vols_ctball);
        map.removeLayer(vols_ctnumb);
        }

var markerEU = new OpenLayers.Marker(new 
OpenLayers.LonLat(13.000000,51.000000),icon);
vols_ctball.addMarker( markerEU);
markerEU.events.register("onclick" , markerEU, handleMarkerClickEU);

which doesn't show any errors, but nothing happens.

The event handler worked OK when I registered it to the map, but not 
when I register it to a marker.

Thanks for your help, Tara

-- 
My e-mail delivery has been unreliable lately, so I am asking for
return receipts from all my email messages.
OK'ing the return receipt lets me know that my message was delivered.
Thank you.

Tara Athan
Principal, Alternatives to Invasive Species
tara_athan [AT] alt2is.com
707-485-1198
PO Box 415
Redwood Valley, CA 95470