Unfortunately the solutions offered so far do require a change of the core files.
In case of a version update they will be gone, nor does everyone have the ability to change the core files by themselves.
The following codelines can be put into the template.js file (which can be edited by a normal LimeSurvey administrator) and adjusted as seen fit.
Code:
$(document).ready(function(){
$.each(gmaps, function( mapid, map ) {
if (mapid.indexOf("marker")==-1)
map.setMapTypeId(google.maps.MapTypeId.HYBRID);
});
});
In this example the map type is set to hybrid. That way only the survey using the particular template is affected. Valid values are
HYBRID Displays a photographic map + roads and city names
ROADMAP Displays a normal, default 2D map
SATELLITE Displays a photographic map
TERRAIN Displays a map with mountains, rivers, etc.
