title: Make Cross Domain Call with OpenLayers 3
body: <p>Since we are using the OpenLayers 3 framework to make our calls to...in my case MapServer...</p>
  
  <pre><code>//******* MapServer water Layer ***************
              var Water = new ol.layer.Tile({
                  name: 'Water',
                  source: new ol.source.TileWMS({
                      url: mapServerPath.ResponseString + 'MappingWater.map&amp;',
                      params: { 'LAYERS': 'Water', 'FORMAT': 'image/png', 'TILED': true },
                      serverType: 'mapserver'
                  })                   
              });
              control.map.addLayer(Water);
  </code></pre>
  
  <p>How do we make this call CORS enabled so that the canvas does not get tainted?</p>
  
  <p>Thanks in advance for your help!!</p>