function checkLoginValues(){
	var username = false;
	var password = false;
	
	if (document.fw_login.fw_password && document.fw_login.fw_password.value!=""){
		password = true;
	} else {
		document.fw_login.fw_password.className="failure";
		document.fw_login.fw_password.focus();
	}
	
	if (document.fw_login.fw_username && document.fw_login.fw_username.value!=""){
		username = true;
	} else {
		document.fw_login.fw_username.className="failure";
		document.fw_login.fw_username.focus();
	}
	
	if (username&&password) return true;
	else {
		document.getElementById('messageDlg').innerHTML="Sie müssen Benutzername und Passwort angeben";
		document.getElementById('messageDlg').style.display="inline";
		}
	return false;	
}