code: function(lonlat, toleranceLon, toleranceLat) {
          var atPoint = false;
          if(this.geometry) {
              atPoint = this.geometry.atPoint(lonlat, toleranceLon, 
                                                      toleranceLat);
          }
          return atPoint;
      }
docs: Method: atPoint
  Determins whether the feature intersects with the specified location.
  
  Parameters:
  lonlat - {<OpenLayers.LonLat>|Object} OpenLayers.LonLat or an
  object with a 'lon' and 'lat' properties.
  toleranceLon - {float} Optional tolerance in Geometric Coords
  toleranceLat - {float} Optional tolerance in Geographic Coords
  
  Returns:
  {Boolean} Whether or not the feature is at the specified location