in the webassist/google_javascript/wagmp_map_4.php file, find the following code:
if (isDefault) {
infowindow.open(map4,marker);
map4.setCenter(point);
}
and change it to:
if (isDefault) {
infowindow.open(map4,marker);
map4.setCenter(point);
setTimeout("google.maps.event.trigger(wagmp_map_4_obj.markers["+wagmp_map_4_obj.markers.length+"],'click')",1000);
}
the infoWindow object does not offer a lot of control like setting the width. to be able to control the infoWindow, it would need to be converted to use the google infoBox instead.
see the following for details:
examples.html