var copyrightCollection = new GCopyrightCollection('');
var copyright = new GCopyright(1, 
                               new GLatLngBounds(new GLatLng(-90, -180), 
                               new GLatLng(90, 180)), 
                               1, 
                               "©  2009 www.odonatacentral.org");
copyrightCollection.addCopyright(copyright);

var tilelayers = [new GTileLayer(copyrightCollection , 0, 17)];
tilelayers[0].getTileUrl = customGetTileUrl;

function customGetTileUrl(a,z) {
  var f = "http://www.odonatacentral.org/test/maps/tiles/z"+z+"x"+a.x+"y"+a.y+".png";      
  return f;
}

var custommap = new GMapType(tilelayers, new GMercatorProjection(19), "Map", {errorMessage:"No data available"});