Calling options

/*********** push a call to the backend with full blocking ***********/ function syncRequest ( requestObj );

/********** push a call to the backend without blocking ***********/ function asyncRequest ( requestObj, callbackPass, callbackFail );

/*********** make a [blocking] call for logout to the backend ***********/ function syncLogout ( );

/*********** make a [blocking] call for login to the backend ***********/ function syncLogin ( username, password ); // calls logout()