Delphi-PRAXiS - Google Maps api v3

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ich habe folgendes Problem:

Ich möcte gerne icons der marker ändern. Dafür habe ich auch ne funktion gefunden, nur die geht irgendwie net:

Hier mal mein Code: Ich hoffe ihr könnt mir helfen
Code:
			'<html> '+

'<head> '+

'<meta name="viewport" content="initial-scale=1.0, user-scalable=yes" /> '+

'<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script> '+

'<script type="text/javascript"> '+

''+

''+

'  var geocoder; '+

'  var map;  '+

'  var trafficLayer;'+

'  var bikeLayer;'+

'  var markersetting;'+

'var markersArray = [];'+

'var runpoints = [];'+

'var runmarkers = [];'+

'  var pointnr = 0;'+

''+

''+

'  function initialize() { '+

'document.getElementById("new").value = 0;'+

'    geocoder = new google.maps.Geocoder();'+

'    var latlng = new google.maps.LatLng(53.1148888888888,8.90284166666666); '+

'    var myOptions = { '+

'      zoom: 18, '+

'      center: latlng, '+

'mapTypeControl: true,'+

'    mapTypeControlOptions: {  '+

'      style: google.maps.MapTypeControlStyle.DROPDOWN_MENU '+

'    },'+

'    navigationControl: true,'+

'    navigationControlOptions: { '+

'      style: google.maps.NavigationControlStyle.ZOOM_PAN'+

'    },'+

'      mapTypeId: google.maps.MapTypeId.ROADMAP '+

'    }; '+

'    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions); '+

'    trafficLayer = new google.maps.TrafficLayer();'+

'    bikeLayer = new google.maps.BicyclingLayer();'+

' google.maps.event.addListener(map, "click", function(event) {'+

'    checkmarker(event.latLng);'+

'  });'+

'Markersetoff()'+

'  } '+

''+

''+

'function checkmarker(location) { '+

'var bbb = "ja";'+

'var ccc = markersetting;'+

//'alert(ccc);'+

' if (ccc == bbb){  '+

'    placeMarker(location);'+

//' alert("ja");'+

'}'+// else { alert("nein");}'+

'}'+

''+

''+

'function outlineMark(number, icon){'+

'  if ( runmarkers[number=-1] ) { '+

'    map.removeOverlay(runmarkers[number=-1]);'+

'    runmarkers[number=-1] = new GMarker (runPoints[number=-1], icon);'+

'    map.addOverlay(runmarkers[number=-1]);'+

'}'+

'alert(runmarkers);'+

'}'+

''+

''+

'function placeMarker(location) { '+

//'clearOverlays();'+

//'  var pointnr;'+

' if (pointnr == 0){  '+

'  var image = "dd-start.png";'+

'}else {'+

'  var image = "pointnr + ".png";'+

//'outlineMark(pointnr, image);'+

'markersArray[0].setImage(image);'+

'pointnr=+1;'+

'  var image = "dd-end.png";'+

'}'+

'  var clickedLocation = new google.maps.LatLng(location);'+

'  var marker = new google.maps.Marker({ '+

'      position: location,'+

'      map: map,'+

'      icon: image'+

'  });'+

' pointnr += 1;'+

''+

'  map.setCenter(location);'+

'document.getElementById("koordinate").value = location;'+

'document.getElementById("new").value = 1;'+

'markersArray.push(marker);'+

'runpoints.push(location);'+

'runmarkers.push(marker);'+

'}'+

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