var g_zoomlevels = new Array(19);
g_zoomlevels[0] = 5;
g_zoomlevels[1] = 5;
g_zoomlevels[2] = 5;
g_zoomlevels[3] = 5;
g_zoomlevels[4] = 5;
g_zoomlevels[5] = 5;
g_zoomlevels[6] = 3;
g_zoomlevels[7] = 3;
g_zoomlevels[8] = 3;
g_zoomlevels[9] = 0.5;
g_zoomlevels[10] = 0.2;
g_zoomlevels[11] = 0.2;
g_zoomlevels[12] = 0.05;
g_zoomlevels[13] = 0.05;
g_zoomlevels[14] = 0.02;
g_zoomlevels[15] = 0.02;
g_zoomlevels[16] = 0.02;
g_zoomlevels[17] = 0.01;
g_zoomlevels[18] = 0.01;

showInfo = function(marker, point){



	//point is in latlong!
	var vX = point.x;
	var vY = point.y;
	//bereken boundingbox!	
	var iZoom = map.getZoom();
	var idelta = g_zoomlevels[iZoom];
	

	var bbox = "BBOX=" + (vX-idelta) + "," + (vY-idelta) + "," + (vX+idelta) + "," + (vY+idelta);
	var info_format = "text/plain"
	//4326
	//X Y is in pixel coordinaat en hier heb ik het middelpunt gepakt!		
	
	//welke laag moet worden bevraagd?
	var url = "http://drisk.geodan.nl/cgi-bin/mapserv.cgi?map=../docs/zeus/maps/vol.map&REQUEST=GetFeatureInfo&SERVICE=WMS&VERSION=1.1.1&LAYERS=volcano&SRS=EPSG:4326&" + bbox + "&WIDTH=500&HEIGHT=500&INFO_FORMAT=" + info_format + "&FEATURE_COUNT=8&QUERY_LAYERS=volcano&X=250&Y=250";
	var vol = document.getElementById("vol");
	if (vol.checked == false)
	{
		url = "http://drisk.geodan.nl/cgi-bin/mapserv.cgi?map=../docs/zeus/maps/dijkringen.map&REQUEST=GetFeatureInfo&SERVICE=WMS&VERSION=1.1.1&LAYERS=dijkringgebieden&SRS=EPSG:4326&" + bbox + "&WIDTH=500&HEIGHT=500&INFO_FORMAT=" + info_format + "&FEATURE_COUNT=8&QUERY_LAYERS=dijkringgebieden&X=250&Y=250";
	}
	
	
	window.open(url,'queryWin','height=400,width=400,scrollbars=yes');
}