function myGPExecuteTask(){
 // Get params from setupParameters method described above.
 var params=setupParameters();

 // Setup onTaskSuccess and onTaskFailure event handlers.
 dojo.connect(gpTask, "onExecuteComplete",onTaskSuccess);
 dojo.connect(gpTask, "onError",onTaskFailure);

 // Execute gpTask with params
 gpTask.execute(params);
}

// Callback when the Task operation succeeded
function onTaskSuccess(results, messages) {
  // Do something with the results...
  // More info on rendering the results in section below    
}

// Handler that is invoked when the Task operation has failed
function onTaskFailure(error) {
  // Report error 
  alert("Error:"+ error); 
}

function myGPSubmitJob(){
 // Get params from setupParameters method described above.
 var params=setupParameters();

 // Setup event handlers.
 dojo.connect(gpTask, "onJobComplete",onTaskComplete);
 dojo.connect(gpTask, "onError",onTaskFailure);
 dojo.connect(gpTask, "onStatusUpdate",onTaskStatus);
 gpTask.submitJob(params);
}

// Event handler for onJobComplete event
function onTaskComplete(jobInfo) {
    /* Get the value of an output parameter Buffer_polygons
      using getResultData. The name of the output
      may vary in your gpTask*/      
    dojo.connect(gpTask, "onGetResultDataComplete",
                      onTaskResultComplete);
    gpTask.getResultData(jobInfo.jobId, 
                          "Buffer_polygons");
}

// Event handler for onStatusUpdate event
function onTaskStatus(jobInfo) {
     //write status to console to help debugging
    console.log(jobInfo.jobStatus);
}

// Event handler for onError event
function onTaskFailure(error) {
  // Report error 
  alert("Error:"+ error); 
}

function onTaskSuccess(results, messages) {
    /* Retrieve the output parameter value based 
      on its position from the result instance.
      In the case shown below, the output is the first output 
      parameter of the task and it
      is a GPFeatureRecordSetLayer.*/
    var featureset = results[0].value;
   
    // Create a graphics layer with features
    var taskResultLayer= new esri.layers.GraphicsLayer
              ({id:"MyGPExecuteResultLayer"});
    
    // Create a symbol based on the geometry. 
    // The geometry is assumed to be polygons in the code below
    var simplePolySymbol = new esri.symbol.SimpleFillSymbol();
    simplePolySymbol.setOutline(new esri.symbol.SimpleLineSymbol(
                  esri.symbol.SimpleLineSymbol.STYLE_SOLID,
                  new dojo.Color([0,0,0,0.5]), 1));
    simplePolySymbol.setColor(new dojo.Color([255,0,0,0.7]));
    
    // Create graphics from features and add it graphicslayer 
    dojo.forEach(featureset.features,function(feature){
             feature.setSymbol(simplePolySymbol);
             //Add feature to the graphics layer
             taskResultLayer.add(feature);});
    }
    // Add graphicslayer to webmap 
    //  myMap is assumed to be an instance of map container esri.map
    myMap.addLayer(taskResultLayer)
}

function onTaskResultComplete(paramResult) {
   // Retrieve the value of the parameter from the paramresult
   var featureSet = paramResult.value;

   // Create a graphics layer with features
   var taskResultLayer= new esri.layers.GraphicsLayer
              ({id:"MyGPSubmitJobResultLayer"});
    
   // Create a symbol based on the geometry. 
   // The geometry is assumed to be polygons in the code below
   var simplePolySymbol = new esri.symbol.SimpleFillSymbol();
   simplePolySymbol.setOutline(new esri.symbol.SimpleLineSymbol(
                  esri.symbol.SimpleLineSymbol.STYLE_SOLID,
                  new dojo.Color([0,0,0,0.5]), 1));
   simplePolySymbol.setColor(new dojo.Color([255,0,0,0.7]));
    
   // Create graphics from features and add it graphicslayer 
   dojo.forEach(featureset.features,function(feature){
             feature.setSymbol(simplePolySymbol);
             //Add feature to the graphics layer
             taskResultLayer.add(feature);});
   }
   // Add graphicslayer to webmap 
   //   myMap is assumed to be an instance of map container esri.map.
   myMap.addLayer(taskResultLayer)
}