function checkRegistrationData(form)
{
    if((form.company_name.value == "") && (form.user_type.value != 'fizinis'))
        alert("Įvęskite įmonės pavadinimą!");
    else if(form.email.value == "")
        alert("Nenurodėte savo elekroninio pašto adreso!");
    else if((form.company_code.value == "") && (form.user_type.value != 'fizinis'))
        alert("Įvęskite įmonės kodą!");
    else if(form.name_surname.value == "")
        alert("Nurodykite savo vardą ir pavardę!");
    else if((form.pvm_code.value == "") && (form.user_type.value != 'fizinis'))
        alert("Įvęskite PVM kodą!");
    else if(form.password.value == "")
        alert("Įvęskite slaptažodį!");
    else if(form.password_control.value == "")
        alert("Pakartokite slaptažodį!");
    else if(form.password.value != form.password_control.value)
        alert("Įvęsti slaptažodžiai nesutampa!");
    else if(form.phone.value == "")
        alert("Įvęskite telefono numerį!");
    else if(form.address.value == "")
        alert("Nurodykite savo adresą!");
    else if(form.delivery_address.value == "")
        alert("Nurodykite pristatymo adresą!");
    else
        form.submit();
}

function reminderCheck(form)
{
    if(form.email.value == "")
        alert("Nenurodėte savo elekroninio pašto adreso!");
    else
        form.submit();
}

function checkLogin(form)
{
    if((form.login_name.value == "") || (form.login_password.value == ""))
        document.location.href = "index.php?option=inner&tm=0&register=new";
    else
        form.submit();
}

function checkUserData(form)
{
    if(form.email.value == "")
        alert("Nenurodėte savo elekroninio pašto adreso!");
    else if(form.name_surname.value == "")
        alert("Nurodykite savo vardą ir pavardę!");
    else if(form.phone.value == "")
        alert("Įvęskite telefono numerį!");
    else if(form.address.value == "")
        alert("Nurodykite savo adresą!");
    else if(form.delivery_address.value == "")
        alert("Nurodykite pristatymo adresą!");
    else if((form.current_password.value == "") && ((form.new_password.value != "") || (form.new_password_control.value != "")))
        alert("Norint pakeisti slaptazodi, reikia nurodyti dabartini slaptazodi!");
    else if((form.current_password.value != "") && (form.new_password.value != form.new_password_control.value))
        alert("Įvęsti slaptažodžiai nesutampa!");
    else if((form.current_password.value != "") && ((form.new_password.value == "") || (form.new_password_control.value == "")))
        alert("Naujas slaptazodis negali buti tuscias! Jeigu nenorite keisti slaptazodzio, istrinkite reiksme 'Dabartinis slaptazodis'");
    else if((form.new_company_name.value == "") && (form.user_type == 'juridinis'))
        alert("Įvęskite įmonės pavadinimą!");
    else if((form.company_code.value == "")  && (form.user_type == 'juridinis'))
        alert("Įvęskite įmonės kodą!");
    else if((form.pvm_code.value == "")  && (form.user_type == 'juridinis'))
        alert("Įvęskite PVM kodą!"); 
    else
        form.submit();
}

function checkEditUserData(form)
{
    if(form.email.value == "")
        alert("Nenurodėte savo elekroninio pašto adreso!");
    else if(form.name_surname.value == "")
        alert("Nurodykite savo vardą ir pavardę!");
    else if(form.phone.value == "")
        alert("Įvęskite telefono numerį!");
    /*else if(form.address.value == "")
        alert("Nurodykite savo adresą!"); */
    else if(form.delivery_address.value == "")
        alert("Nurodykite pristatymo adresą!");
    else if((form.current_password.value == "") && ((form.new_password.value != "") || (form.new_password_control.value != "")))
        alert("Norint pakeisti slaptazodi, reikia nurodyti dabartini slaptazodi!");
    else if((form.current_password.value != "") && (form.new_password.value != form.new_password_control.value))
        alert("Įvęsti slaptažodžiai nesutampa!");
    else if((form.current_password.value != "") && ((form.new_password.value == "") || (form.new_password_control.value == "")))
        alert("Naujas slaptazodis negali buti tuscias! Jeigu nenorite keisti slaptazodzio, istrinkite reiksme 'Dabartinis slaptazodis'");
    /*else if((form.new_company_name.value == "") && (form.user_type == 'juridinis'))
        alert("Įvęskite įmonės pavadinimą!");
    else if((form.company_code.value == "")  && (form.user_type == 'juridinis'))
        alert("Įvęskite įmonės kodą!");
    else if((form.pvm_code.value == "")  && (form.user_type == 'juridinis'))
        alert("Įvęskite PVM kodą!");  */
    else
        form.submit();
}

function userTypeChange(form)
{
    if(form.user_type.value == 'fizinis')
    {
        form.pvm_code.value = '';
        form.pvm_code.disabled = true;
        form.company_code.value = '';
        form.company_code.disabled = true;
        
        if(form.company_name == null)
        {
            form.new_company_name.value = '';
            form.new_company_name.disabled = true;
        }
        else
        {
            form.company_name.value = '';
            form.company_name.disabled = true;
        }
    }
    else if(form.user_type.value == 'juridinis')
    {
        form.pvm_code.disabled = false;
        form.company_code.disabled = false;

        if(form.company_name == null)
            form.new_company_name.disabled = false;
        else
            form.company_name.disabled = false;
    }
}