// 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 (Server == null) var Server = {};
Server._path = '/dwr';
Server.getActiveServers = function(callback) {
  dwr.engine._execute(Server._path, 'Server', 'getActiveServers', callback);
}
Server.getActiveImgServers = function(callback) {
  dwr.engine._execute(Server._path, 'Server', 'getActiveImgServers', callback);
}