Here is a list of all the markers: https://sites.google.com/site/gmapsdevelopment/
here is how to added them to a marker
instantiate the object:
var marker = new google.maps.Marker({position: new google.maps.LatLng(lata,longi), map: map,title: "Some title", icon: 'https://maps.google.com/mapfiles/ms/micons/rangerstation.png'});
Flow and Method:
var allMarkers = [];
var marker = new google.maps.Marker({position: new google.maps.LatLng(lata,longi), map: map,title: "Some title"});
allMarkers.push(marker);
var marker = new google.maps.Marker({position: new google.maps.LatLng(lata2 ,longi2 ), map: map,title: "Some title 2"});
allMarkers.push(marker);
for(var ix=0;ix< allMarkers.length;ix++ )
{
allMarkers[ix].setIcon('https://maps.google.com/mapfiles/ms/icons/red-dot.png');
}