var selected = 0;
 
var setStatus = function ( type )
{
    if ( type == 0 )
    {
	selected = 0;
	document.getElementById('pesel').disabled = true;
	document.getElementById('regon').disabled = false;
	document.getElementById('nip').disabled = false;
	document.getElementById('nazwa_firmy').disabled = false; 
	document.getElementById('nip').style.backgroundColor = '#ffffff';
	document.getElementById('regon').style.backgroundColor = '#ffffff';
	document.getElementById('nazwa_firmy').style.backgroundColor = '#ffffff';
	document.getElementById('pesel').style.backgroundColor = '#d4d4d4';
    }
    else
    {
	selected = 1;
	
	document.getElementById('pesel').disabled = false;
	document.getElementById('regon').disabled = true;
	document.getElementById('nip').disabled = true; 
	document.getElementById('nazwa_firmy').disabled = true; 
	document.getElementById('nip').style.backgroundColor = '#d4d4d4';
	document.getElementById('regon').style.backgroundColor = '#d4d4d4';
	document.getElementById('nazwa_firmy').style.backgroundColor = '#d4d4d4';
	document.getElementById('pesel').style.backgroundColor = '#ffffff';
    }
}
 
var checkForm = function ()
{
    if ( selected == 1 && document.getElementById('pesel').value.length == 0 )
    {
	alert ( 'Pesel jest polem wymaganym!' );
	return false;
    }
    
    if ( selected == 0 && ( document.getElementById('nip').value.length == 0 || document.getElementById('regon').value.length == 0 ) )
    {
	alert ( 'Pola NIP oraz REGON sa wymagane!' );
	return false;
    }
    
    return true;
}