title: esri map display info window without clicking on the map
body: <p>I'm using the esri map javascipts API. I want to show a info window on the map. However, in the example given by esri, the user must need to click on the map to show the info window. Because in the example, one of the parameter is the screenPoint, which must be obtained by clicking on the map. Can i just click on a button to show a info window in a specific location? Thanks!</p>
  
  <pre><code>dojo.connect(map.graphics, "onClick", function(evt) {
        var g = evt.graphic;
        map.infoWindow.setContent(g.getContent());
        map.infoWindow.setTitle(g.getTitle());
        map.infoWindow.show(evt.screenPoint,map.getInfoWindowAnchor(evt.screenPoint));
      });
  </code></pre>