I'm switching icon types of google maps markers between a default one and another one (made by google chart api). To switch back to standard icon I use: marker.setIcon('http://maps.google.com/mapfiles/marker.png'); For another icon I use: marker.setIcon('http://maps.google.com/mapfiles/marker_yellow.png'); The question is: is the URL I use really the "standard" (canonical)? Is it assured that goog