I'm trying to add a layer to a javascript map, but I keep getting an error that esri.layers.FeatureLayer is not a constructor. I can only find one post about this, where that person was not using dojo.addOnLoad. I've included my code- what is causing this?<head>
<script src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.3" type="text/javascript"></script>
<link href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.3/js/dojo/dijit/themes/claro/claro.css" rel="stylesheet" type="text/css" >
<script type="text/javascript">
dojo.require("esri.map");
dojo.require("esri.layers.FeatureLayer");
var map;
var campus;
function init() {
map = new esri.Map("mapDiv");
var spatialRef = new esri.SpatialReference({wkid:4326});
var startExtent = new esri.geometry.Extent();
startExtent.xmin = -88.7491;
startExtent.ymin = 42.8345;
startExtent.xmax = -88.7368;
startExtent.ymax = 42.8433;
startExtent.SpatialReference = spatialRef;
map.setExtent(startExtent);
var mapServiceURL = "http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer";
map.addLayer(new esri.layers.ArcGISTiledMapServiceLayer(mapServiceURL));
campus = new esri.layers.FeatureLayer("http://[SERVER]/ArcGIS/rest/services/campusjava1/MapServer/0");
}
dojo.addOnLoad(init);
</script>
</head>
<body OnLoad="init()" class="claro">
<div id="mapDiv" style="width:1000px; height:800px; border:1px solid #000;"></div>
</body>
