Legend reply "No legend" urgent response needed

elizabethkalinaki

I added some layers to my web map, am calling it using the arcgis javascript api 2.5 but for the legend i get "No legend" where the legend should be, can someone help me, almost throwing in the towel!
I want to be able to call a layer by its id..something like.if one clicks on this symbol, show this layer
thank you

elizabethkalinaki

thank you for the response, here is the code...

<script type="text/javascript">
      dojo.require("dijit.dijit");
      dojo.require("dijit.layout.BorderContainer");
      dojo.require("dijit.layout.ContentPane");
      dojo.require("esri.map");
      dojo.require("esri.arcgis.utils");
      dojo.require("esri.dijit.Legend");
      dojo.require("esri.dijit.Scalebar");
     
     
     

      var map;

      function init() {

     esri.config.defaults.io.proxyUrl = "/arcgisserver/apis/javascript/proxy/proxy.ashx";
        var mapDeferred = esri.arcgis.utils.createMap("e6cb82722b8d4a31a39c053e24ca8789", "map", {
          mapOptions: {
            slider: true,
            nav:false
          }
        });
        mapDeferred.addCallback(function(response) {
         
          map = response.map;
         
          //resize the map when the browser resizes
          dojo.connect(dijit.byId('map'), 'resize', map,map.resize);
          //add the legend
          var layers = response.itemInfo.itemData.operationalLayers;  
          if(map.loaded){
            initMap(layers);
          }
          else{
          dojo.connect(map,"onLoad",function(){
            initMap(layers);
          });
        }
        });
        mapDeferred.addErrback(function(error) {
          console.log("Map creation failed: ", dojo.toJson(error));
        });


      }
     
      function initMap(layers){
       //add chrome theme for popup
        dojo.addClass(map.infoWindow.domNode, "chrome");

       //add a scalebar
        var scalebar = new esri.dijit.Scalebar({
          map:map,
          scalebarUnit: 'english'
        });
        //add a legend
        var layerInfo = dojo.map(layers, function(layer,index){
          return {layer:layer.layerObject,title:layer.title};
        });
        if(layerInfo.length > 0){
          var legendDijit = new esri.dijit.Legend({
            map:map,
            respectCurrentMapScale:true,
            layerInfos:layerInfo
          },"legend");

          legendDijit.startup();
        }
        else{
          dojo.byId('legend').innerHTML = 'No operational layers';
        }

      }

      //show map on load
      dojo.addOnLoad(init);

    </script>

i really need this, thank you