function computeZonalStats(geometry) {
/*After user draws shape on map using the draw toolbar compute the zonal*/
map.showZoomSlider();
map.graphics.clear();
var symbol = new esri.symbol.SimpleFillSymbol("none", new esri.symbol.SimpleLineSymbol("dashdot", new dojo.Color([255,0,0]), 2), new dojo.Color([255,255,0,0.25]));
var graphic = new esri.Graphic(geometry,symbol);
map.graphics.add(graphic);
toolbar.deactivate();
var features= [];
features.push(graphic);
var featureSet = new esri.tasks.FeatureSet();
featureSet.features = features;
var params = {};
params.inputPoly = featureSet;
gp.execute(params, displayResults, errorStatus);
}