gen_204 error

[DEWaller]

This error is generated during ...

$('#map_canvas').gMap({
latitude: 53.009,
longitude: -4.117126,
maptype: 'TERRAIN',
zoom: 8,
markers: markers(json),
controls: {
panControl: true,
zoomControl: true,
mapTypeControl: true,
scaleControl: true,
streetViewControl: true,
overviewMapControl: true
}
});