Luetaan karttaa...
// https://developers.google.com/kml/documentation/kml_tut#geometrystyles
// http://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html
// https://developers.google.com/maps/articles/toomanymarkers
// http://hpneo.github.io/gmaps/examples/geojson_polygon.html
// http://stackoverflow.com/questions/15371736/google-fusion-tables-api-v1-and-geojson-to-google-maps-utility
// https://github.com/Leaflet/Leaflet.markercluster
// http://geojsonlint.com/
// http://openlayers.org/dev/examples/utfgrid_twogrids.html
// http://ie.microsoft.com/testdrive/Graphics/hands-on-css3/hands-on_3d-transforms.htm
// https://support.google.com/fusiontables/answer/2665746?hl=en
// http://gmaps-samples-v3.googlecode.com/svn/trunk/toomanymarkers/toomanymarkers.html