Google Maps displaying custom paths

I'm trying to customize the icons drawn by the GDirections object. I've got a list of lat long coordinates which I use to construct a path. However, I can't find any way of customizing (or even turning off) the markers that are automatically placed by the API.

var map;
map = new GMap2(document.getElementById("map_canvas"));
.... //get the path coordinates
var route = new GDirections(map);
route.load(path_coordinates);

Calling route.getPolyline().hide() hides the path 开发者_开发百科but not the markers. Calling route.getMarker(1).isHidden() returns true and obviously hiding it doesn't change anything. Is this functionality not supported by the api? I'm using map api 2.81

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Try this code:

var map;
map = new GMap2(document.getElementById("map_canvas"));
.... //get the path coordinates
var route = new GDirections(map);
route.load(path_coordinates);
GEvent.addListener(route , "addoverlay", hideDirMarkers); 
function hideDirMarkers(){ 
        var numMarkers = route.getNumGeocodes() 
        for (var i = 0; i < numMarkers; i++) { 
                var marker = route.getMarker(i); 
                if (marker != null) 
                        marker.hide(); 
                else 
                        alert("Marker is null"); 
        } 
}