// Provide a default path to dwr.engine
if (dwr == null) var dwr = {};
if (dwr.engine == null) dwr.engine = {};
if (DWREngine == null) var DWREngine = dwr.engine;

if (TrailVIP == null) var TrailVIP = {};
TrailVIP._path = '/dwr';
TrailVIP.trail = function(p0, p1, p2, p3, callback) {
  dwr.engine._execute(TrailVIP._path, 'TrailVIP', 'trail', p0, p1, p2, p3, callback);
}