// 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 (UserDao == null) var UserDao = {};
UserDao._path = '/dwr';
UserDao.isexit = function(p0, callback) {
  dwr.engine._execute(UserDao._path, 'UserDao', 'isexit', p0, callback);
}