var ajax = new sack();
function getCityList(sel)
{
var cod_cap = document.getElementById('plz_txt').value;
	document.getElementById('ort_txt').options.length = 0;
	document.getElementById('land_nome_txt').value = "";
	document.getElementById('land_txt').value = "";
	if(cod_cap.length==5){
		ajax.requestFile = 'cercacap/cerca_cap.asp?cap='+cod_cap;
		ajax.onCompletion = createCities;
		ajax.runAJAX();		
	}
}
function createCities()
{
	var obj = document.getElementById('ort_txt');
	var formObj = document.forms['form1'];	
	eval(ajax.response);	
}