function drawGoogleMapsRoute(){
	if(!map) {
		alert('Route konnte nicht berechnet werden!');
		return false;
	}
	gdir = new GDirections(map, document.getElementById("directions"));
	gdir.load("from: " + $('route_from').get('value') + " to: " + $('route_to').get('value'), { "locale": "de_DE" });
}

window.addEvent('domready', function() {
	$('route_calc').addEvent('click', drawGoogleMapsRoute);
});