title: How to disable DragPan in OpenLayers 3?
body: <p>How to disable DragPan interaction in Openlayers 3 (when map is already defined)?</p>
  
  <p>Also, why I'm unable to use mousemove event?<br>
  I'm doing this: <code>map.on('mousemove',function(e){ ...});</code> and it doesn't work.</p>