function changeDepartureCities()
{
	var tr = document.getElementById('transport').value;
	var klasa = document.getElementById('transport').className;
	var sel = document.getElementById('wyjazdz').value;
	var div = document.getElementById('sf');
	
	var html = '<select class="'+klasa+'" name="wyjazdz" id="wyjazdz">';
	html += '<option value="0">Dowolne miasto&hellip;</option>';
	
	if(tr == 's') html += depCitiesPlane;
	else if (tr == 'a' || tr == 0) html += depCities;
	
	html += '</select>';
	
	div.innerHTML = html;

	var cts = document.getElementById('wyjazdz');
	if(tr == 's')
	{
		cts.disabled = false; 
		cts.value = sel;
	}
	else if (tr == 'a' || tr == 0)
	{
		cts.disabled = false;
		cts.value = sel;
	}
	else
	{
		cts.disabled = true;
	}
}