// 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 (CommonDWR == null) var CommonDWR = {};
CommonDWR._path = '/auto/dwr';
CommonDWR.findUserCity = function(callback) {
  dwr.engine._execute(CommonDWR._path, 'CommonDWR', 'findUserCity', callback);
}