function SelectUserType()
{
    var oUserType = document.getElementById('UserType');
    var oCompany = document.getElementById('virk');
    var oUserName = document.getElementById('login');
    var oPassword = document.getElementById('password');
    var oSave = document.getElementById('save');
    if(oUserType.value != 'anonymous')
    {
        oCompany.disabled = false;
        oCompany.style.backgroundColor = 'white';
        oUserName.disabled = false;
        oUserName.style.backgroundColor = 'white';
        oPassword.disabled = false;
        oPassword.style.backgroundColor = 'white';
        oSave.disabled = false;
        //Don't change background here - it's window
        //oSave.style.backgroundColor = 'white';
    }
    else
    {
        oCompany.disabled = true;
        oCompany.style.backgroundColor = 'silver';
        oUserName.disabled = true;
        oUserName.style.backgroundColor = 'silver';
        oPassword.disabled = true;
        oPassword.style.backgroundColor = 'silver';
        oSave.disabled = true;
        //Don't change background here - it's window
        //oSave.style.backgroundColor = 'silver';
    }
}
function ValidateLogin() 
{
    var oUserType = document.getElementById('UserType');
    var oCompany = document.getElementById('virk');
    var oUserName = document.getElementById('login');
    var oPassword = document.getElementById('password');
    // All logins from user interface are required to be all capital letters
    oCompany.value = oCompany.value.toUpperCase();
    oUserName.value = oUserName.value.toUpperCase();
    oPassword.value = oPassword.value.toUpperCase();
    if(oUserType.value != 'anonymous')
    {
        if(oCompany.value.length <= 1) 
        {
            alert('Feltet "Virksomhed" skal udfyldes');
            return(false);
        }
        if(oUserName.value.length <= 1) 
        {
            alert('Feltet "Brugernavn" skal udfyldes');
            return(false);
        }
        if(oPassword.value.length <= 1) 
        {
            alert('Feltet "Password" skal udfyldes');
            return(false);
        }
    }
    return true;
}