function test(form) {
    if (form.imie.value=="") {
        alert("Name is required field.");
        form.imie.focus();
        return false;
    } 
    else if (form.nazwisko.value=="") {
        alert("Surname is required field .");
        form.nazwisko.focus();
        return false;
    } 
    else if (form.email.value=="") {
        alert("Email is required field .");
        form.email.focus();
        return false;
    } 
    else if (form.haslor.value != form.haslo.value) {
        alert("Password do not mach.");
        form.haslor.focus();
        return false;
    } 
    else if (form.haslo.value=="") {
        alert("Password is required field .");
        form.pass.focus();
        return false;
    } 
    else if (form.ulica.value=="") {
        alert("Delivery address is required field .");
        form.ulica.focus();
        return false;
    } 
    else if (form.kod.value=="") {
        alert("Postcode is required field .");
        form.kod.focus();
        return false;
    } 
    else if (form.kraj.value=="") {
        alert("Country is required field .");
        form.kraj.focus();
        return false;
    } 
    else if (form.miasto.value=="") {
        alert("Surname is required field .");
        form.miasto.focus();
        return false;
    } 

    else return true;
}