function handleLogin( inputFormName, responseFormName ) {
	if( !inputFormName ) {
		inputFormName = 'inputForm';
	}
	if( !responseFormName ) {
		responseFormName = 'responseForm';
	}
	var form = document.forms[inputFormName];
	var username = form.elements["username"].value;
	var password = form.elements["password"].value;
	
	var responseForm = document.forms[responseFormName];
	var challenge = responseForm.elements["challenge"].value;
	var response = hex_hmac_md5(challenge, password);
	responseForm.elements["username"].value = username;
	responseForm.elements["response"].value = response;
	
	responseForm.submit();
	return false;
}