Removing a Feature Layer?

BrettGreenfield__DNR_

Is there a way to do this?  I can remove layers added as dynamic or tiled map services, but I can't remove layers added as a Feature Layer (unless I use .removeAllLayers, which of course gets rid of everything, which I don't want).

Why doesn't .removeLayer work with Feature Layers?

BrettGreenfield__DNR_

Thanks for the reply Jennifer - fortunately, I figured it out!

 var map;
 var oysterLayers;
 
    function init() {
   var extent = new esri.geometry.Extent({"xmin":409914.00497589994,"ymin":104607.44204058842,"xmax":482562.42004832183,"ymax":141217.9675552771,"spatialReference":{"wkid":26985}})
      map = new esri.Map("map",{extent:extent});
   
   var baseMap = new esri.layers.ArcGISTiledMapServiceLayer("http://www.mdimap.us/ArcGIS/rest/services/ImageryBaseMapsEarthCover/MD.State.MDiMap_Gazetteer83M/MapServer");
      map.addLayer(baseMap);
   oysterLayers = new esri.layers.FeatureLayer("http://www.mdimap.us/ArcGIS/rest/services/Biota/MD.State.BayOysters/MapServer/0"); 
   
 }
 
 function toggle(form) {
  if (form.checkThis.checked) {
   map.addLayer(oysterLayers)
  } else {
   map.removeLayer(oysterLayers)
  }
 }

The layer I was trying to toggle with a checkbox was the one defined by the oysterLayers variable.  I had originally defined that variable under the toggle function; for some reason when doing that, I could add the layer via the checkbox, but not remove it.  Any idea why that's the case?  I'm still quite new to JavaScript so I'm not able to see why that wouldn't work.